FR575113A - Improvements to phonographs - Google Patents

Improvements to phonographs

Info

Publication number
FR575113A
FR575113A FR575113DA FR575113A FR 575113 A FR575113 A FR 575113A FR 575113D A FR575113D A FR 575113DA FR 575113 A FR575113 A FR 575113A
Authority
FR
France
Prior art keywords
phonographs
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
Charles Cahit
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 FR575113A publication Critical patent/FR575113A/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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR575113D 1923-12-28 1923-12-28 Improvements to phonographs Expired FR575113A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR575113T 1923-12-28

Publications (1)

Publication Number Publication Date
FR575113A true FR575113A (en) 1924-07-24

Family

ID=8953160

Family Applications (1)

Application Number Title Priority Date Filing Date
FR575113D Expired FR575113A (en) 1923-12-28 1923-12-28 Improvements to phonographs

Country Status (1)

Country Link
FR (1) FR575113A (en)

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