FR564249A - Improvements to cinematographic devices - Google Patents

Improvements to cinematographic devices

Info

Publication number
FR564249A
FR564249A FR564249DA FR564249A FR 564249 A FR564249 A FR 564249A FR 564249D A FR564249D A FR 564249DA FR 564249 A FR564249 A FR 564249A
Authority
FR
France
Prior art keywords
cinematographic
devices
cinematographic 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
Paul Eynard
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 FR564249A publication Critical patent/FR564249A/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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/18—Fire preventing or extinguishing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR564249D 1923-03-23 1923-03-23 Improvements to cinematographic devices Expired FR564249A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR564249T 1923-03-23

Publications (1)

Publication Number Publication Date
FR564249A true FR564249A (en) 1923-12-24

Family

ID=8945619

Family Applications (1)

Application Number Title Priority Date Filing Date
FR564249D Expired FR564249A (en) 1923-03-23 1923-03-23 Improvements to cinematographic devices

Country Status (1)

Country Link
FR (1) FR564249A (en)

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