FR570746A - Loudspeaker telephone receiver - Google Patents

Loudspeaker telephone receiver

Info

Publication number
FR570746A
FR570746A FR570746DA FR570746A FR 570746 A FR570746 A FR 570746A FR 570746D A FR570746D A FR 570746DA FR 570746 A FR570746 A FR 570746A
Authority
FR
France
Prior art keywords
telephone receiver
loudspeaker telephone
loudspeaker
receiver
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
Edmond-Louis-Marie Ragonot
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 FR570746A publication Critical patent/FR570746A/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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR570746D 1923-07-26 1923-07-26 Loudspeaker telephone receiver Expired FR570746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR570746T 1923-07-26

Publications (1)

Publication Number Publication Date
FR570746A true FR570746A (en) 1924-05-06

Family

ID=8950086

Family Applications (1)

Application Number Title Priority Date Filing Date
FR570746D Expired FR570746A (en) 1923-07-26 1923-07-26 Loudspeaker telephone receiver

Country Status (1)

Country Link
FR (1) FR570746A (en)

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