FR789840A - Improvements to cinematographic projection devices - Google Patents

Improvements to cinematographic projection devices

Info

Publication number
FR789840A
FR789840A FR789840DA FR789840A FR 789840 A FR789840 A FR 789840A FR 789840D A FR789840D A FR 789840DA FR 789840 A FR789840 A FR 789840A
Authority
FR
France
Prior art keywords
projection devices
cinematographic projection
cinematographic
devices
projection
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
Hanlet Jean
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 FR789840A publication Critical patent/FR789840A/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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR789840D 1935-05-09 1935-05-09 Improvements to cinematographic projection devices Expired FR789840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR789840T 1935-05-09

Publications (1)

Publication Number Publication Date
FR789840A true FR789840A (en) 1935-11-07

Family

ID=9220333

Family Applications (1)

Application Number Title Priority Date Filing Date
FR789840D Expired FR789840A (en) 1935-05-09 1935-05-09 Improvements to cinematographic projection devices

Country Status (1)

Country Link
FR (1) FR789840A (en)

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