FR400342A - Relais phonique - Google Patents

Relais phonique

Info

Publication number
FR400342A
FR400342A FR400342DA FR400342A FR 400342 A FR400342 A FR 400342A FR 400342D A FR400342D A FR 400342DA FR 400342 A FR400342 A FR 400342A
Authority
FR
France
Prior art keywords
sound relay
relay
sound
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)
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.)
Societe des Etablissements Gaumont
Original Assignee
Societe des Etablissements Gaumont
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 Societe des Etablissements Gaumont filed Critical Societe des Etablissements Gaumont
Application granted granted Critical
Publication of FR400342A publication Critical patent/FR400342A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR400342D 1908-05-30 1908-05-30 Relais phonique Expired FR400342A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR400342T 1908-05-30

Publications (1)

Publication Number Publication Date
FR400342A true FR400342A (fr) 1909-07-24

Family

ID=1445224

Family Applications (1)

Application Number Title Priority Date Filing Date
FR400342D Expired FR400342A (fr) 1908-05-30 1908-05-30 Relais phonique

Country Status (1)

Country Link
FR (1) FR400342A (fr)

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