FR472442A - Perfectionnements aux cinématographes - Google Patents

Perfectionnements aux cinématographes

Info

Publication number
FR472442A
FR472442A FR472442DA FR472442A FR 472442 A FR472442 A FR 472442A FR 472442D A FR472442D A FR 472442DA FR 472442 A FR472442 A FR 472442A
Authority
FR
France
Prior art keywords
cinematographs
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
English (en)
Inventor
Nicholas Power
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR472442A publication Critical patent/FR472442A/fr
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)
FR472442D 1914-02-21 1914-02-21 Perfectionnements aux cinématographes Expired FR472442A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR472442T 1914-02-21

Publications (1)

Publication Number Publication Date
FR472442A true FR472442A (fr) 1914-12-04

Family

ID=1510616

Family Applications (1)

Application Number Title Priority Date Filing Date
FR472442D Expired FR472442A (fr) 1914-02-21 1914-02-21 Perfectionnements aux cinématographes

Country Status (1)

Country Link
FR (1) FR472442A (fr)

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