FR699987A - Improvements to cinematographic projection devices - Google Patents

Improvements to cinematographic projection devices

Info

Publication number
FR699987A
FR699987A FR699987DA FR699987A FR 699987 A FR699987 A FR 699987A FR 699987D A FR699987D A FR 699987DA FR 699987 A FR699987 A FR 699987A
Authority
FR
France
Prior art keywords
projection devices
cinematographic projection
cinematographic
devices
projection
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
Georges Villard
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 FR699987A publication Critical patent/FR699987A/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
    • G03B1/00—Film strip handling
    • G03B1/18—Moving film strip by means which act on the film between the ends thereof
    • G03B1/20—Acting means
    • G03B1/32—Friction grippers or rollers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR699987D 1929-11-13 1929-11-13 Improvements to cinematographic projection devices Expired FR699987A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR699987T 1929-11-13

Publications (1)

Publication Number Publication Date
FR699987A true FR699987A (en) 1931-02-23

Family

ID=9048496

Family Applications (1)

Application Number Title Priority Date Filing Date
FR699987D Expired FR699987A (en) 1929-11-13 1929-11-13 Improvements to cinematographic projection devices

Country Status (1)

Country Link
FR (1) FR699987A (en)

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