FR561357A - Membrane for hearing devices - Google Patents

Membrane for hearing devices

Info

Publication number
FR561357A
FR561357A FR561357DA FR561357A FR 561357 A FR561357 A FR 561357A FR 561357D A FR561357D A FR 561357DA FR 561357 A FR561357 A FR 561357A
Authority
FR
France
Prior art keywords
membrane
hearing devices
hearing
devices
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.)
Signal GmbH
Original Assignee
Signal GmbH
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 Signal GmbH filed Critical Signal GmbH
Application granted granted Critical
Publication of FR561357A publication Critical patent/FR561357A/en
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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
FR561357D 1922-01-26 1923-01-24 Membrane for hearing devices Expired FR561357A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE561357X 1922-01-26

Publications (1)

Publication Number Publication Date
FR561357A true FR561357A (en) 1923-10-20

Family

ID=6566210

Family Applications (1)

Application Number Title Priority Date Filing Date
FR561357D Expired FR561357A (en) 1922-01-26 1923-01-24 Membrane for hearing devices

Country Status (1)

Country Link
FR (1) FR561357A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1158834A2 (en) * 2000-05-23 2001-11-28 Harman Audio Electronic Systems GmbH High frequency loudspeaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1158834A2 (en) * 2000-05-23 2001-11-28 Harman Audio Electronic Systems GmbH High frequency loudspeaker
EP1158834A3 (en) * 2000-05-23 2007-05-02 Harman Becker Automotive Systems GmbH High frequency loudspeaker

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