FR861604A - Relais phono-électrique - Google Patents

Relais phono-électrique

Info

Publication number
FR861604A
FR861604A FR861604DA FR861604A FR 861604 A FR861604 A FR 861604A FR 861604D A FR861604D A FR 861604DA FR 861604 A FR861604 A FR 861604A
Authority
FR
France
Prior art keywords
phono
electric relay
relay
electric
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
English (en)
Inventor
Gaston Beauvais
Jacques Simon Monys-Levy
Rene Salomon Oppenheimer
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 FR861604A publication Critical patent/FR861604A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/02—Transducers using more than one principle simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR861604D 1939-06-27 1939-06-27 Relais phono-électrique Expired FR861604A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR861604T 1939-06-27

Publications (1)

Publication Number Publication Date
FR861604A true FR861604A (fr) 1941-02-13

Family

ID=9340936

Family Applications (1)

Application Number Title Priority Date Filing Date
FR861604D Expired FR861604A (fr) 1939-06-27 1939-06-27 Relais phono-électrique

Country Status (1)

Country Link
FR (1) FR861604A (fr)

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