FR428252A - Improvements to cinematographs - Google Patents

Improvements to cinematographs

Info

Publication number
FR428252A
FR428252A FR428252DA FR428252A FR 428252 A FR428252 A FR 428252A FR 428252D A FR428252D A FR 428252DA FR 428252 A FR428252 A FR 428252A
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
French (fr)
Inventor
Thomas Percy Middleton
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 FR428252A publication Critical patent/FR428252A/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
    • G03B21/32—Details specially adapted for motion-picture projection
    • G03B21/40—Eliminating or reducing effect of flicker

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR428252D 1911-03-04 1911-03-04 Improvements to cinematographs Expired FR428252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR428252T 1911-03-04

Publications (1)

Publication Number Publication Date
FR428252A true FR428252A (en) 1911-08-26

Family

ID=1470660

Family Applications (1)

Application Number Title Priority Date Filing Date
FR428252D Expired FR428252A (en) 1911-03-04 1911-03-04 Improvements to cinematographs

Country Status (1)

Country Link
FR (1) FR428252A (en)

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