FR1341815A - piezoelectric earphone - Google Patents

piezoelectric earphone

Info

Publication number
FR1341815A
FR1341815A FR917403A FR917403A FR1341815A FR 1341815 A FR1341815 A FR 1341815A FR 917403 A FR917403 A FR 917403A FR 917403 A FR917403 A FR 917403A FR 1341815 A FR1341815 A FR 1341815A
Authority
FR
France
Prior art keywords
piezoelectric earphone
earphone
piezoelectric
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
FR917403A
Other languages
French (fr)
Inventor
Henri Izarn
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
Priority to FR917403A priority Critical patent/FR1341815A/en
Application granted granted Critical
Publication of FR1341815A publication Critical patent/FR1341815A/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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
FR917403A 1962-12-03 1962-12-03 piezoelectric earphone Expired FR1341815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR917403A FR1341815A (en) 1962-12-03 1962-12-03 piezoelectric earphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR917403A FR1341815A (en) 1962-12-03 1962-12-03 piezoelectric earphone

Publications (1)

Publication Number Publication Date
FR1341815A true FR1341815A (en) 1963-11-02

Family

ID=8792032

Family Applications (1)

Application Number Title Priority Date Filing Date
FR917403A Expired FR1341815A (en) 1962-12-03 1962-12-03 piezoelectric earphone

Country Status (1)

Country Link
FR (1) FR1341815A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2441983A1 (en) * 1974-11-18 1980-06-13 Hiroshi Ono DEVICE FOR TRANSMITTING AND RECEIVING VOICE SOUNDS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2441983A1 (en) * 1974-11-18 1980-06-13 Hiroshi Ono DEVICE FOR TRANSMITTING AND RECEIVING VOICE SOUNDS

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