FR493847A - Method and apparatus for scientific cinematography allowing the projection of immobilized film fragments without danger of fire or charring for the film - Google Patents

Method and apparatus for scientific cinematography allowing the projection of immobilized film fragments without danger of fire or charring for the film

Info

Publication number
FR493847A
FR493847A FR493847DA FR493847A FR 493847 A FR493847 A FR 493847A FR 493847D A FR493847D A FR 493847DA FR 493847 A FR493847 A FR 493847A
Authority
FR
France
Prior art keywords
film
cinematography
charring
danger
scientific
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
Herman Van Cappelle
Charles Velsen
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.)
CHARLES VELSEN
Original Assignee
CHARLES VELSEN
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 CHARLES VELSEN filed Critical CHARLES VELSEN
Application granted granted Critical
Publication of FR493847A publication Critical patent/FR493847A/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)
FR493847D 1917-01-15 1918-03-29 Method and apparatus for scientific cinematography allowing the projection of immobilized film fragments without danger of fire or charring for the film Expired FR493847A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL493847X 1917-01-15

Publications (1)

Publication Number Publication Date
FR493847A true FR493847A (en) 1919-08-22

Family

ID=1529554

Family Applications (1)

Application Number Title Priority Date Filing Date
FR493847D Expired FR493847A (en) 1917-01-15 1918-03-29 Method and apparatus for scientific cinematography allowing the projection of immobilized film fragments without danger of fire or charring for the film

Country Status (1)

Country Link
FR (1) FR493847A (en)

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