FR715639A - Improvements to phonographs - Google Patents

Improvements to phonographs

Info

Publication number
FR715639A
FR715639A FR715639DA FR715639A FR 715639 A FR715639 A FR 715639A FR 715639D A FR715639D A FR 715639DA FR 715639 A FR715639 A FR 715639A
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
Jacques Meguerditchian
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 FR715639A publication Critical patent/FR715639A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR715639D 1931-04-18 1931-04-18 Improvements to phonographs Expired FR715639A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR715639T 1931-04-18

Publications (1)

Publication Number Publication Date
FR715639A true FR715639A (en) 1931-12-07

Family

ID=9089067

Family Applications (1)

Application Number Title Priority Date Filing Date
FR715639D Expired FR715639A (en) 1931-04-18 1931-04-18 Improvements to phonographs

Country Status (1)

Country Link
FR (1) FR715639A (en)

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