FR640529A - Improvement in telephone receivers - Google Patents

Improvement in telephone receivers

Info

Publication number
FR640529A
FR640529A FR640529DA FR640529A FR 640529 A FR640529 A FR 640529A FR 640529D A FR640529D A FR 640529DA FR 640529 A FR640529 A FR 640529A
Authority
FR
France
Prior art keywords
improvement
telephone receivers
receivers
telephone
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
Andre Falco
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 FR640529A publication Critical patent/FR640529A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
FR640529D 1927-02-17 1927-02-17 Improvement in telephone receivers Expired FR640529A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR640529T 1927-02-17

Publications (1)

Publication Number Publication Date
FR640529A true FR640529A (en) 1928-07-16

Family

ID=8997534

Family Applications (1)

Application Number Title Priority Date Filing Date
FR640529D Expired FR640529A (en) 1927-02-17 1927-02-17 Improvement in telephone receivers

Country Status (1)

Country Link
FR (1) FR640529A (en)

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