FR698489A - Improvements to the processes for obtaining sound film negatives - Google Patents

Improvements to the processes for obtaining sound film negatives

Info

Publication number
FR698489A
FR698489A FR698489DA FR698489A FR 698489 A FR698489 A FR 698489A FR 698489D A FR698489D A FR 698489DA FR 698489 A FR698489 A FR 698489A
Authority
FR
France
Prior art keywords
processes
sound film
obtaining sound
film negatives
negatives
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
Carl Stahl
M Berthold Freund
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 FR698489A publication Critical patent/FR698489A/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)
FR698489D 1929-04-02 1930-03-29 Improvements to the processes for obtaining sound film negatives Expired FR698489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE698489X 1929-04-02

Publications (1)

Publication Number Publication Date
FR698489A true FR698489A (en) 1931-01-31

Family

ID=6608180

Family Applications (1)

Application Number Title Priority Date Filing Date
FR698489D Expired FR698489A (en) 1929-04-02 1930-03-29 Improvements to the processes for obtaining sound film negatives

Country Status (1)

Country Link
FR (1) FR698489A (en)

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