FR719576A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR719576A
FR719576A FR719576DA FR719576A FR 719576 A FR719576 A FR 719576A FR 719576D A FR719576D A FR 719576DA FR 719576 A FR719576 A FR 719576A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction systems
systems
sound
reproduction
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
Freeman Harrison Owens
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 FR719576A publication Critical patent/FR719576A/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)
FR719576D 1931-06-30 1931-06-30 Improvements to sound reproduction systems Expired FR719576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR719576T 1931-06-30

Publications (1)

Publication Number Publication Date
FR719576A true FR719576A (en) 1932-02-08

Family

ID=9091149

Family Applications (1)

Application Number Title Priority Date Filing Date
FR719576D Expired FR719576A (en) 1931-06-30 1931-06-30 Improvements to sound reproduction systems

Country Status (1)

Country Link
FR (1) FR719576A (en)

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