FR631777A - Improvements to cinematographic devices - Google Patents

Improvements to cinematographic devices

Info

Publication number
FR631777A
FR631777A FR631777DA FR631777A FR 631777 A FR631777 A FR 631777A FR 631777D A FR631777D A FR 631777DA FR 631777 A FR631777 A FR 631777A
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
Etienne Oehmichen
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 FR631777A publication Critical patent/FR631777A/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
FR631777D 1926-07-02 1926-07-02 Improvements to cinematographic devices Expired FR631777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR631777T 1926-07-02

Publications (1)

Publication Number Publication Date
FR631777A true FR631777A (en) 1927-12-26

Family

ID=8992037

Family Applications (1)

Application Number Title Priority Date Filing Date
FR631777D Expired FR631777A (en) 1926-07-02 1926-07-02 Improvements to cinematographic devices

Country Status (1)

Country Link
FR (1) FR631777A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE937923C (en) * 1952-12-11 1956-01-19 Friedrich Strecker Object table for episcopes, adapted in shape and size to the object field, which is connected to a cooling fan
DE1097171B (en) * 1956-05-15 1961-01-12 Erich Zillmer Projector with built-in turbo fan
DE1128739B (en) * 1959-05-19 1962-04-26 Dresden Feinmess Device for film cooling in motion picture projectors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE937923C (en) * 1952-12-11 1956-01-19 Friedrich Strecker Object table for episcopes, adapted in shape and size to the object field, which is connected to a cooling fan
DE1097171B (en) * 1956-05-15 1961-01-12 Erich Zillmer Projector with built-in turbo fan
DE1128739B (en) * 1959-05-19 1962-04-26 Dresden Feinmess Device for film cooling in motion picture projectors

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