FR660872A - Pendulum for telephone loudspeakers - Google Patents

Pendulum for telephone loudspeakers

Info

Publication number
FR660872A
FR660872A FR660872DA FR660872A FR 660872 A FR660872 A FR 660872A FR 660872D A FR660872D A FR 660872DA FR 660872 A FR660872 A FR 660872A
Authority
FR
France
Prior art keywords
loudspeakers
pendulum
telephone
telephone loudspeakers
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
Jean-Rene Lecoq
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 FR660872A publication Critical patent/FR660872A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR660872D 1927-09-23 1928-09-22 Pendulum for telephone loudspeakers Expired FR660872A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE660872X 1927-09-23

Publications (1)

Publication Number Publication Date
FR660872A true FR660872A (en) 1929-07-18

Family

ID=3877119

Family Applications (1)

Application Number Title Priority Date Filing Date
FR660872D Expired FR660872A (en) 1927-09-23 1928-09-22 Pendulum for telephone loudspeakers

Country Status (1)

Country Link
FR (1) FR660872A (en)

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