FR2269292A7 - - Google Patents

Info

Publication number
FR2269292A7
FR2269292A7 FR7512839A FR7512839A FR2269292A7 FR 2269292 A7 FR2269292 A7 FR 2269292A7 FR 7512839 A FR7512839 A FR 7512839A FR 7512839 A FR7512839 A FR 7512839A FR 2269292 A7 FR2269292 A7 FR 2269292A7
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
FR7512839A
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.)
PEIKER HEINRICH DT
Original Assignee
PEIKER HEINRICH DT
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
Priority claimed from DE19742420310 external-priority patent/DE2420310C3/en
Application filed by PEIKER HEINRICH DT filed Critical PEIKER HEINRICH DT
Application granted granted Critical
Publication of FR2269292A7 publication Critical patent/FR2269292A7/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
FR7512839A 1974-04-26 1975-04-24 Expired FR2269292A7 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742420310 DE2420310C3 (en) 1974-04-26 Device for sound recording and reproduction

Publications (1)

Publication Number Publication Date
FR2269292A7 true FR2269292A7 (en) 1975-11-21

Family

ID=5914071

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7512839A Expired FR2269292A7 (en) 1974-04-26 1975-04-24

Country Status (2)

Country Link
FR (1) FR2269292A7 (en)
GB (1) GB1492476A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4142304A1 (en) * 2021-08-31 2023-03-01 GN Audio A/S In-ear audio device with resonator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8704795D0 (en) * 1987-03-02 1987-04-08 Carey F A Communicator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4142304A1 (en) * 2021-08-31 2023-03-01 GN Audio A/S In-ear audio device with resonator

Also Published As

Publication number Publication date
DE2420310B2 (en) 1976-03-18
GB1492476A (en) 1977-11-23
DE2420310A1 (en) 1975-10-30

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