FR692447A - Phonograph for films - Google Patents

Phonograph for films

Info

Publication number
FR692447A
FR692447A FR692447DA FR692447A FR 692447 A FR692447 A FR 692447A FR 692447D A FR692447D A FR 692447DA FR 692447 A FR692447 A FR 692447A
Authority
FR
France
Prior art keywords
phonograph
films
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
Eugene-Alexandre Huguenard
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 FR692447A publication Critical patent/FR692447A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR692447D 1929-06-18 1929-06-18 Phonograph for films Expired FR692447A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR692447T 1929-06-18

Publications (1)

Publication Number Publication Date
FR692447A true FR692447A (en) 1930-11-05

Family

ID=9037641

Family Applications (1)

Application Number Title Priority Date Filing Date
FR692447D Expired FR692447A (en) 1929-06-18 1929-06-18 Phonograph for films

Country Status (1)

Country Link
FR (1) FR692447A (en)

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