FR2040447B1 - - Google Patents

Info

Publication number
FR2040447B1
FR2040447B1 FR7015631A FR7015631A FR2040447B1 FR 2040447 B1 FR2040447 B1 FR 2040447B1 FR 7015631 A FR7015631 A FR 7015631A FR 7015631 A FR7015631 A FR 7015631A FR 2040447 B1 FR2040447 B1 FR 2040447B1
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
FR7015631A
Other versions
FR2040447A1 (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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2040447A1 publication Critical patent/FR2040447A1/fr
Application granted granted Critical
Publication of FR2040447B1 publication Critical patent/FR2040447B1/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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
FR7015631A 1969-04-30 1970-04-29 Expired FR2040447B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21953/69A GB1277912A (en) 1969-04-30 1969-04-30 Electro-acoustic transducers

Publications (2)

Publication Number Publication Date
FR2040447A1 FR2040447A1 (fr) 1971-01-22
FR2040447B1 true FR2040447B1 (fr) 1974-05-03

Family

ID=10171533

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7015631A Expired FR2040447B1 (fr) 1969-04-30 1970-04-29

Country Status (6)

Country Link
JP (1) JPS4823005B1 (fr)
DE (1) DE2019520A1 (fr)
ES (1) ES379238A1 (fr)
FR (1) FR2040447B1 (fr)
GB (1) GB1277912A (fr)
IL (1) IL34068A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902262A (en) * 1973-12-19 1975-09-02 Burroughs Corp Identification and/or credit card with flush mounted panels
JPS5246724Y2 (fr) * 1974-06-20 1977-10-24
JPS5411605U (fr) * 1977-06-27 1979-01-25
JPS5363131A (en) * 1977-07-04 1978-06-06 Toshiba Corp Identification card
JPS5821468U (ja) * 1981-08-06 1983-02-09 凸版印刷株式会社 カ−ド
EP0500985A1 (fr) * 1991-02-27 1992-09-02 Masao Konomi Montage pour microphone à conduction osseuse
JP3958739B2 (ja) * 2003-12-12 2007-08-15 Ｎｅｃトーキン株式会社 音響振動発生素子
DE102016206566A1 (de) * 2016-04-19 2017-10-19 Robert Bosch Gmbh Mikromechanisches Bauteil und Herstellungsverfahren für ein mikromechanisches Bauteil
CN114449417B (zh) * 2020-10-30 2022-11-25 华为技术有限公司 扬声器及电子设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE452217A (fr) *
US2045427A (en) * 1933-05-24 1936-06-23 Sonotone Corp Bone-conduction hearing-aid
US3423543A (en) * 1965-06-24 1969-01-21 Harry W Kompanek Loudspeaker with piezoelectric wafer driving elements

Also Published As

Publication number Publication date
ES379238A1 (es) 1972-09-16
IL34068A (en) 1973-06-29
GB1277912A (en) 1972-06-14
IL34068A0 (en) 1970-05-21
JPS4823005B1 (fr) 1973-07-10
DE2019520A1 (de) 1970-11-12
FR2040447A1 (fr) 1971-01-22

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Legal Events

Date Code Title Description
ST Notification of lapse