FR30070E - Vibrating membrane for telephone devices - Google Patents

Vibrating membrane for telephone devices

Info

Publication number
FR30070E
FR30070E FR30070DA FR30070E FR 30070 E FR30070 E FR 30070E FR 30070D A FR30070D A FR 30070DA FR 30070 E FR30070 E FR 30070E
Authority
FR
France
Prior art keywords
vibrating membrane
telephone devices
telephone
devices
vibrating
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)
Inventor
Albert Mathot
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 filed Critical
Application granted granted Critical
Publication of FR30070E publication Critical patent/FR30070E/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
FR30070D 1925-02-02 1925-02-02 Vibrating membrane for telephone devices Expired FR30070E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR30070T 1925-02-02

Publications (1)

Publication Number Publication Date
FR30070E true FR30070E (en) 1926-01-26

Family

ID=8668002

Family Applications (2)

Application Number Title Priority Date Filing Date
FR590332D Expired FR590332A (en) 1925-02-02 1924-12-12 Vibrating membrane for telephone devices
FR30070D Expired FR30070E (en) 1925-02-02 1925-02-02 Vibrating membrane for telephone devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR590332D Expired FR590332A (en) 1925-02-02 1924-12-12 Vibrating membrane for telephone devices

Country Status (1)

Country Link
FR (2) FR590332A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239943A (en) * 1977-11-17 1980-12-16 Cerwin Vega, Inc. Adjustable dual spider for a loudspeaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239943A (en) * 1977-11-17 1980-12-16 Cerwin Vega, Inc. Adjustable dual spider for a loudspeaker

Also Published As

Publication number Publication date
FR590332A (en) 1925-06-15

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