FR688968A - Improvements to the processes for the production of sound cinematographic films and to said films - Google Patents

Improvements to the processes for the production of sound cinematographic films and to said films

Info

Publication number
FR688968A
FR688968A FR688968DA FR688968A FR 688968 A FR688968 A FR 688968A FR 688968D A FR688968D A FR 688968DA FR 688968 A FR688968 A FR 688968A
Authority
FR
France
Prior art keywords
films
sound
processes
production
cinematographic
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
Henri Chretien
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 FR688968A publication Critical patent/FR688968A/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)
FR688968D 1929-01-28 1930-01-27 Improvements to the processes for the production of sound cinematographic films and to said films Expired FR688968A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US688968XA 1929-01-28 1929-01-28

Publications (1)

Publication Number Publication Date
FR688968A true FR688968A (en) 1930-09-01

Family

ID=22085397

Family Applications (1)

Application Number Title Priority Date Filing Date
FR688968D Expired FR688968A (en) 1929-01-28 1930-01-27 Improvements to the processes for the production of sound cinematographic films and to said films

Country Status (1)

Country Link
FR (1) FR688968A (en)

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