FR842736A - Loudspeaker membrane improvements - Google Patents

Loudspeaker membrane improvements

Info

Publication number
FR842736A
FR842736A FR842736DA FR842736A FR 842736 A FR842736 A FR 842736A FR 842736D A FR842736D A FR 842736DA FR 842736 A FR842736 A FR 842736A
Authority
FR
France
Prior art keywords
loudspeaker membrane
membrane improvements
loudspeaker
membrane
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Application granted granted Critical
Publication of FR842736A publication Critical patent/FR842736A/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
FR842736D 1937-08-30 1938-08-29 Loudspeaker membrane improvements Expired FR842736A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE518636X 1937-08-30

Publications (1)

Publication Number Publication Date
FR842736A true FR842736A (en) 1939-06-19

Family

ID=6550115

Family Applications (1)

Application Number Title Priority Date Filing Date
FR842736D Expired FR842736A (en) 1937-08-30 1938-08-29 Loudspeaker membrane improvements

Country Status (3)

Country Link
US (1) US2230548A (en)
FR (1) FR842736A (en)
GB (1) GB518636A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624417A (en) * 1947-02-20 1953-01-06 Joseph B Brennan Acoustic diaphragm with flexible rim portion and rigid body portion
FR2518348B1 (en) * 1981-12-16 1987-04-10 Guyot Michel SPEAKER MEMBRANE AND METHOD FOR THE PRODUCTION THEREOF

Also Published As

Publication number Publication date
US2230548A (en) 1941-02-04
GB518636A (en) 1940-03-04

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