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US395291A
(en)
|
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1888-12-25 |
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Philip muller |
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US598191A
(en)
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1898-02-01 |
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Filter |
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US342151A
(en)
|
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1886-05-18 |
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Filter |
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US556725A
(en)
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1896-03-17 |
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Water-filter |
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(en)
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1898-11-14 |
1899-06-27 |
Samuel Gudeman |
Filter.
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(en)
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1902-09-08 |
1903-09-15 |
William H Woods |
Screen for catch-basins or the like.
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(en)
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1904-02-25 |
1904-09-06 |
Jethro Moore Hill |
Automatic water-cut-off spout.
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US809201A
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1905-08-26 |
1906-01-02 |
Us Sanitary And Utility Sewage Disposal Company |
Receiving-basin.
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(en)
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1906-04-07 |
1906-12-11 |
Wenceslaus Frank Mikolasek |
Rain-water filter.
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1916-04-24 |
1922-11-28 |
Otterson Autoeductor Co |
Method of cleaning out city catch basins
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(en)
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1919-10-21 |
1921-03-08 |
U G Pelphrey |
Inlet-valve casing
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US1468906A
(en)
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1921-10-08 |
1923-09-25 |
Inman William |
Fuel-oil filter
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US1833315A
(en)
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1923-12-21 |
1931-11-24 |
Harry H Burhans |
Filtering medium
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US1940316A
(en)
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1932-07-30 |
1933-12-19 |
Ac Spark Plug Co |
Liquid filter
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(en)
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1934-04-02 |
1936-05-19 |
Continental Oil Co |
Fluid straining device
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1935-03-13 |
1937-04-13 |
Pepperell Mfg Company |
Filtering method
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(en)
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1935-08-09 |
1936-12-08 |
Briggs & Stratton Corp |
Filter
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US2301430A
(en)
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1938-04-11 |
1942-11-10 |
Malanowski Stanley |
Filter
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(en)
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1939-06-09 |
1944-01-04 |
Forrest William James |
Filtering and like treatment of fluids
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US2381627A
(en)
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1942-09-29 |
1945-08-07 |
Lonnie L Thompson |
Filter
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(en)
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1943-03-20 |
1946-01-15 |
Cleo E Brown |
Filter
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(en)
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1943-04-07 |
1945-03-13 |
Hubert Horace Grayson |
Water conditioner
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(en)
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1943-05-25 |
1944-12-05 |
Parry Albert Thomas |
Oil filter
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1948-10-05 |
1952-09-09 |
Bendix Aviat Corp |
Fluid purifying device
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1949-03-29 |
1951-12-04 |
Pentz Benjamin H Von |
Oil filter
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*
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1950-01-11 |
1954-09-14 |
Milton A Powers |
Refillable filter
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1952-08-29 |
1956-04-17 |
Arthur A Schuller |
Pressure filter with vibrating device for use in back washing operation
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1955-05-16 |
1957-03-19 |
Youman Products Inc |
Upflow water filter
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1955-08-10 |
1958-12-02 |
Detrex Chem Ind |
Filters
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1956-09-07 |
1958-12-16 |
Bendix Aviat Corp |
Vertical two stage demulsifier filter assembly
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1956-09-10 |
1962-04-03 |
Burton L Oliver |
Flow control apparatus
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1958-12-08 |
1962-01-16 |
American Air Filter Co |
Gas filter apparatus
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1959-01-19 |
1962-11-20 |
Henry Valve Co |
Refrigerant drier
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1960-01-04 |
1962-10-30 |
Brown Co |
Dry well forming receptacle
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FR1263336A
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1960-04-28 |
1961-06-09 |
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Devices for water treatment
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1960-06-23 |
1965-01-12 |
Stone Filter Corp |
Filter with filter aid
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1961-03-03 |
1965-07-20 |
C I T Corp |
Unitary rotatable pressure leaf filter
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1961-06-30 |
1965-10-05 |
Bowser Inc |
Liquid fuel filter
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1963-03-13 |
1966-02-08 |
Champion Lab Inc |
Disposable fluid filter
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DE1460305A1
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1963-04-11 |
1969-01-02 |
Ugo Pranovi |
Self-cleaning solvent filter for machines for chemical cleaning of clothes
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1963-08-22 |
1966-06-28 |
Morgan Construction Co |
Centripetal scale pit
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1964-03-23 |
1967-04-04 |
Neill Tank Company Inc O |
Means for treating oil well production
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1964-08-28 |
1967-10-03 |
William A Graham |
Plastic liner for oil filter
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1964-09-30 |
1966-10-25 |
Xerox Corp |
Sheet registration device
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1965-04-16 |
1968-01-23 |
Varjabedian Jack |
Filter with liquid displacing piston
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1966-02-09 |
1967-02-28 |
Swimquip Inc |
Automatic skim tank and system
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1966-07-12 |
1968-03-26 |
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1966-09-01 |
1968-01-23 |
Hollingshead Corp |
Multi-phase separation unit
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1968-03-08 |
1970-05-26 |
Henry T Young |
Filter
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1968-06-17 |
1969-12-09 |
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Multiple filter element cleaning means
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1968-07-18 |
1970-07-28 |
Vulcan Lab Inc |
Fluid treatment apparatus
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1968-09-16 |
1970-08-18 |
Kaiser Aluminium Chem Corp |
Filter medium for molten metal
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1969-07-03 |
1971-08-24 |
Xerox Corp |
Sheet registering apparatus
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1969-09-19 |
1972-07-04 |
Underwater Storage Inc |
Storm sewage treatment
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1969-11-05 |
1971-07-27 |
Fram Corp |
Filter assembly having a replaceable filter element
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1970-11-23 |
1972-10-17 |
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Self-cleaning filter system
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1971-06-09 |
1973-07-24 |
Kaiser Aluminium Chem Corp |
Rigid filter assembly
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Cata Sep Inc |
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1972-01-03 |
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Envirotech Corp |
Enclosure assembly
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1973-06-26 |
Aeration Septic Tank Co |
Aeration septic tank
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1973-06-05 |
1974-12-17 |
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Gyratory filter
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Products And Pollution Controls Co. |
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Jet Aeration Company |
Upflow filter
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Upflow filter
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1975-02-24 |
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Filter Specialists, Inc. |
Liquid filter having multiple filtering elements
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Fibredyne, Inc. |
Plural stage filter cartridge wherein at least one stage comprises pulverized particulate material
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1976-07-19 |
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PROCEDURE AND DEVICE FOR FILTERING HYDROGEN AND GASES AND USING THE PROCEDURE RESP DEVICE
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1977-06-15 |
1980-03-11 |
Emerson Electric Co. |
Bi-directional filter drier
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1977-08-15 |
1979-06-12 |
Kansas State University Research Foundation |
Method of filtration using convertible (semifluidized) beds
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1978-02-14 |
1980-01-01 |
Huyck Corporation |
Stitch knitted filters for high temperature fluids and method of making them
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1978-03-13 |
1979-11-12 |
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TRYCKFILTER
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Fuel filter and water separator apparatus
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1981-04-14 |
Summit Engineering Corporation |
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1979-09-12 |
1981-04-28 |
American Air Filter Company, Inc. |
Filter housing
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Girmes Werke Ag |
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1981-07-28 |
Delbag Luftfilter Gmbh |
FILTRATION ELEMENTS
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1981-08-13 |
Intensiv-Filter Gmbh & Co Kg, 5620 Velbert |
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1981-02-03 |
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Wix Corporation |
Liquid filter
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METHOD AND DIPHASIC SEPARATOR-METER FOR MEASURING, CONTINUOUSLY AND RESPECTIVELY, THE QUANTITIES OF GAS AND LIQUID DELIVERED IN A DYNAMIC FLOW OF A MIXTURE OF GAS AND LIQUID
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