FR697115A - Improvements to cameras - Google Patents

Improvements to cameras

Info

Publication number
FR697115A
FR697115A FR697115DA FR697115A FR 697115 A FR697115 A FR 697115A FR 697115D A FR697115D A FR 697115DA FR 697115 A FR697115 A FR 697115A
Authority
FR
France
Prior art keywords
cameras
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
Van Dyke Hill
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 FR697115A publication Critical patent/FR697115A/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
    • G03B21/32—Details specially adapted for motion-picture projection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR697115D 1929-06-07 1930-06-05 Improvements to cameras Expired FR697115A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US697115XA 1929-06-07 1929-06-07

Publications (1)

Publication Number Publication Date
FR697115A true FR697115A (en) 1931-01-12

Family

ID=22090736

Family Applications (1)

Application Number Title Priority Date Filing Date
FR697115D Expired FR697115A (en) 1929-06-07 1930-06-05 Improvements to cameras

Country Status (1)

Country Link
FR (1) FR697115A (en)

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