FR686168A - Perfectionnements apportés aux cinématographes parlants - Google Patents

Perfectionnements apportés aux cinématographes parlants

Info

Publication number
FR686168A
FR686168A FR686168DA FR686168A FR 686168 A FR686168 A FR 686168A FR 686168D A FR686168D A FR 686168DA FR 686168 A FR686168 A FR 686168A
Authority
FR
France
Prior art keywords
cinematographs
talking
talking cinematographs
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
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VISIONTONE TALKING PICTURES LT
Original Assignee
VISIONTONE TALKING PICTURES LT
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 by VISIONTONE TALKING PICTURES LT filed Critical VISIONTONE TALKING PICTURES LT
Application granted granted Critical
Publication of FR686168A publication Critical patent/FR686168A/fr
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)
FR686168D 1928-12-06 1929-12-05 Perfectionnements apportés aux cinématographes parlants Expired FR686168A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US686168XA 1928-12-06 1928-12-06

Publications (1)

Publication Number Publication Date
FR686168A true FR686168A (fr) 1930-07-23

Family

ID=22083669

Family Applications (1)

Application Number Title Priority Date Filing Date
FR686168D Expired FR686168A (fr) 1928-12-06 1929-12-05 Perfectionnements apportés aux cinématographes parlants

Country Status (1)

Country Link
FR (1) FR686168A (fr)

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