FR618821A - Improvements to phonographs - Google Patents

Improvements to phonographs

Info

Publication number
FR618821A
FR618821A FR618821DA FR618821A FR 618821 A FR618821 A FR 618821A FR 618821D A FR618821D A FR 618821DA FR 618821 A FR618821 A FR 618821A
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
Joseph Lebrun
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 FR618821A publication Critical patent/FR618821A/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)
FR618821D 1926-02-17 1926-07-12 Improvements to phonographs Expired FR618821A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE618821X 1926-02-17

Publications (1)

Publication Number Publication Date
FR618821A true FR618821A (en) 1927-03-22

Family

ID=3875590

Family Applications (1)

Application Number Title Priority Date Filing Date
FR618821D Expired FR618821A (en) 1926-02-17 1926-07-12 Improvements to phonographs

Country Status (1)

Country Link
FR (1) FR618821A (en)

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