FR578701A - Improvements to phonographs - Google Patents

Improvements to phonographs

Info

Publication number
FR578701A
FR578701A FR578701DA FR578701A FR 578701 A FR578701 A FR 578701A FR 578701D A FR578701D A FR 578701DA FR 578701 A FR578701 A FR 578701A
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
Edouard-Henri-Franco Chateau
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 FR578701A publication Critical patent/FR578701A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR578701D 1924-01-07 1924-01-07 Improvements to phonographs Expired FR578701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR578701T 1924-01-07

Publications (1)

Publication Number Publication Date
FR578701A true FR578701A (en) 1924-10-02

Family

ID=8955617

Family Applications (1)

Application Number Title Priority Date Filing Date
FR578701D Expired FR578701A (en) 1924-01-07 1924-01-07 Improvements to phonographs

Country Status (1)

Country Link
FR (1) FR578701A (en)

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