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FR543550A - Multiple central office telephone systems - Google Patents

Multiple central office telephone systems

Info

Publication number
FR543550A
FR543550A FR543550DA FR543550A FR 543550 A FR543550 A FR 543550A FR 543550D A FR543550D A FR 543550DA FR 543550 A FR543550 A FR 543550A
Authority
FR
France
Prior art keywords
central office
telephone systems
multiple central
office telephone
systems
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR543550A publication Critical patent/FR543550A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
FR543550D 1921-02-09 1921-11-14 Multiple central office telephone systems Expired FR543550A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US175260XA 1921-02-09 1921-02-09

Publications (1)

Publication Number Publication Date
FR543550A true FR543550A (en) 1922-09-05

Family

ID=21783092

Family Applications (2)

Application Number Title Priority Date Filing Date
FR26655D Active FR26655E (en) 1921-02-09
FR543550D Expired FR543550A (en) 1921-02-09 1921-11-14 Multiple central office telephone systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR26655D Active FR26655E (en) 1921-02-09

Country Status (3)

Country Link
US (3) USRE17632E (en)
FR (2) FR543550A (en)
GB (1) GB175260A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749535A (en) * 1951-11-23 1956-06-05 Westinghouse Electric Corp Telemetering systems

Also Published As

Publication number Publication date
US1615998A (en) 1927-02-01
US1614678A (en) 1927-01-18
GB175260A (en) 1923-04-12
USRE17632E (en) 1930-04-01
FR26655E (en)

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