FR45625E - Improvements to cinematographic projectors - Google Patents

Improvements to cinematographic projectors

Info

Publication number
FR45625E
FR45625E FR45625DA FR45625E FR 45625 E FR45625 E FR 45625E FR 45625D A FR45625D A FR 45625DA FR 45625 E FR45625 E FR 45625E
Authority
FR
France
Prior art keywords
cinematographic projectors
cinematographic
projectors
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
Debrie
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 FR45625E publication Critical patent/FR45625E/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
    • G03B21/16—Cooling; Preventing overheating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR45625D 1934-07-09 1934-07-09 Improvements to cinematographic projectors Expired FR45625E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR45625T 1934-07-09

Publications (1)

Publication Number Publication Date
FR45625E true FR45625E (en) 1935-11-02

Family

ID=8681346

Family Applications (1)

Application Number Title Priority Date Filing Date
FR45625D Expired FR45625E (en) 1934-07-09 1934-07-09 Improvements to cinematographic projectors

Country Status (1)

Country Link
FR (1) FR45625E (en)

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