FR542431A - Fire protection device for cinematographic apparatus - Google Patents

Fire protection device for cinematographic apparatus

Info

Publication number
FR542431A
FR542431A FR542431DA FR542431A FR 542431 A FR542431 A FR 542431A FR 542431D A FR542431D A FR 542431DA FR 542431 A FR542431 A FR 542431A
Authority
FR
France
Prior art keywords
protection device
fire protection
cinematographic apparatus
cinematographic
fire
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
Johan Gottfrid Pettersson
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 FR542431A publication Critical patent/FR542431A/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
    • G03B21/18—Fire preventing or extinguishing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR542431D 1921-10-17 1921-10-17 Fire protection device for cinematographic apparatus Expired FR542431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR542431T 1921-10-17

Publications (1)

Publication Number Publication Date
FR542431A true FR542431A (en) 1922-08-11

Family

ID=8930868

Family Applications (1)

Application Number Title Priority Date Filing Date
FR542431D Expired FR542431A (en) 1921-10-17 1921-10-17 Fire protection device for cinematographic apparatus

Country Status (1)

Country Link
FR (1) FR542431A (en)

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