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FR2047021B1 - - Google Patents

Info

Publication number
FR2047021B1
FR2047021B1 FR707022918A FR7022918A FR2047021B1 FR 2047021 B1 FR2047021 B1 FR 2047021B1 FR 707022918 A FR707022918 A FR 707022918A FR 7022918 A FR7022918 A FR 7022918A FR 2047021 B1 FR2047021 B1 FR 2047021B1
Authority
FR
France
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
FR707022918A
Other languages
French (fr)
Other versions
FR2047021A1 (en
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.)
RUSSONA Ltd
Original Assignee
RUSSONA Ltd
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 RUSSONA Ltd filed Critical RUSSONA Ltd
Publication of FR2047021A1 publication Critical patent/FR2047021A1/fr
Application granted granted Critical
Publication of FR2047021B1 publication Critical patent/FR2047021B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H04R27/02—Amplifying systems for the deaf
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Near-Field Transmission Systems (AREA)
FR707022918A 1969-06-21 1970-06-22 Expired FR2047021B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3146169 1969-06-21

Publications (2)

Publication Number Publication Date
FR2047021A1 FR2047021A1 (en) 1971-03-12
FR2047021B1 true FR2047021B1 (en) 1973-01-12

Family

ID=10323431

Family Applications (1)

Application Number Title Priority Date Filing Date
FR707022918A Expired FR2047021B1 (en) 1969-06-21 1970-06-22

Country Status (3)

Country Link
DE (1) DE2030691A1 (en)
FR (1) FR2047021B1 (en)
NL (1) NL7009153A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508830A1 (en) * 1985-03-13 1986-09-18 Robert Bosch Gmbh, 7000 Stuttgart Hearing aid
GB9625157D0 (en) 1996-12-04 1997-01-22 A E Patents Limited Hearing enhancement system
DE102005005603A1 (en) * 2005-02-07 2006-08-17 Siemens Audiologische Technik Gmbh Data transmission device for wireless data transmission for hearing aids and corresponding method

Also Published As

Publication number Publication date
NL7009153A (en) 1970-12-23
FR2047021A1 (en) 1971-03-12
DE2030691A1 (en) 1970-12-23

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Legal Events

Date Code Title Description
ST Notification of lapse