FR676969A - Ventilation device for cinematographic projectors - Google Patents

Ventilation device for cinematographic projectors

Info

Publication number
FR676969A
FR676969A FR676969DA FR676969A FR 676969 A FR676969 A FR 676969A FR 676969D A FR676969D A FR 676969DA FR 676969 A FR676969 A FR 676969A
Authority
FR
France
Prior art keywords
ventilation device
cinematographic projectors
cinematographic
projectors
ventilation
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of FR676969A publication Critical patent/FR676969A/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)
FR676969D 1929-06-21 1929-06-21 Ventilation device for cinematographic projectors Expired FR676969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR676969T 1929-06-21

Publications (1)

Publication Number Publication Date
FR676969A true FR676969A (en) 1930-03-01

Family

ID=1543684

Family Applications (1)

Application Number Title Priority Date Filing Date
FR676969D Expired FR676969A (en) 1929-06-21 1929-06-21 Ventilation device for cinematographic projectors

Country Status (1)

Country Link
FR (1) FR676969A (en)

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