FR740236A - Improvement in projection devices for talking or sound films, reproducers of sounds recorded photographically on films - Google Patents

Improvement in projection devices for talking or sound films, reproducers of sounds recorded photographically on films

Info

Publication number
FR740236A
FR740236A FR740236DA FR740236A FR 740236 A FR740236 A FR 740236A FR 740236D A FR740236D A FR 740236DA FR 740236 A FR740236 A FR 740236A
Authority
FR
France
Prior art keywords
films
reproducers
talking
improvement
projection devices
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
Roger Turpin
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 FR740236A publication Critical patent/FR740236A/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
    • G03B31/02—Associated working of cameras or projectors with sound-recording or sound-reproducing means in which sound track is on a moving-picture film

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR740236D 1931-10-20 1931-10-20 Improvement in projection devices for talking or sound films, reproducers of sounds recorded photographically on films Expired FR740236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR740236T 1931-10-20

Publications (1)

Publication Number Publication Date
FR740236A true FR740236A (en) 1933-01-23

Family

ID=9133913

Family Applications (1)

Application Number Title Priority Date Filing Date
FR740236D Expired FR740236A (en) 1931-10-20 1931-10-20 Improvement in projection devices for talking or sound films, reproducers of sounds recorded photographically on films

Country Status (1)

Country Link
FR (1) FR740236A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE872911C (en) * 1941-05-18 1953-04-09 Bauer Eugen Gmbh Tongeraet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE872911C (en) * 1941-05-18 1953-04-09 Bauer Eugen Gmbh Tongeraet

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