FR655716A - Improvements to cinematographic projection devices - Google Patents

Improvements to cinematographic projection devices

Info

Publication number
FR655716A
FR655716A FR655716DA FR655716A FR 655716 A FR655716 A FR 655716A FR 655716D A FR655716D A FR 655716DA FR 655716 A FR655716 A FR 655716A
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)
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.)
BRITISH CONS INVEST CORP Ltd
Original Assignee
BRITISH CONS INVEST CORP Ltd
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 BRITISH CONS INVEST CORP Ltd filed Critical BRITISH CONS INVEST CORP Ltd
Application granted granted Critical
Publication of FR655716A publication Critical patent/FR655716A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR655716D 1927-06-18 1928-06-14 Improvements to cinematographic projection devices Expired FR655716A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US655716XA 1927-06-18 1927-06-18

Publications (1)

Publication Number Publication Date
FR655716A true FR655716A (en) 1929-04-23

Family

ID=1543071

Family Applications (1)

Application Number Title Priority Date Filing Date
FR655716D Expired FR655716A (en) 1927-06-18 1928-06-14 Improvements to cinematographic projection devices

Country Status (1)

Country Link
FR (1) FR655716A (en)

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