FR658794A - Apparatus for preventing inflammation of films in motion picture projectors - Google Patents

Apparatus for preventing inflammation of films in motion picture projectors

Info

Publication number
FR658794A
FR658794A FR658794DA FR658794A FR 658794 A FR658794 A FR 658794A FR 658794D A FR658794D A FR 658794DA FR 658794 A FR658794 A FR 658794A
Authority
FR
France
Prior art keywords
films
motion picture
preventing inflammation
picture projectors
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)
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.)
SENTRY SAFETY CONTROL CORP
Original Assignee
SENTRY SAFETY CONTROL CORP
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 SENTRY SAFETY CONTROL CORP filed Critical SENTRY SAFETY CONTROL CORP
Application granted granted Critical
Publication of FR658794A publication Critical patent/FR658794A/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)
FR658794D 1928-07-25 1928-07-25 Apparatus for preventing inflammation of films in motion picture projectors Expired FR658794A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR658794T 1928-07-25

Publications (1)

Publication Number Publication Date
FR658794A true FR658794A (en) 1929-06-19

Family

ID=9009308

Family Applications (1)

Application Number Title Priority Date Filing Date
FR658794D Expired FR658794A (en) 1928-07-25 1928-07-25 Apparatus for preventing inflammation of films in motion picture projectors

Country Status (1)

Country Link
FR (1) FR658794A (en)

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