FR17546E - Improvements to cinematographic projection devices - Google Patents

Improvements to cinematographic projection devices

Info

Publication number
FR17546E
FR17546E FR17546DA FR17546E FR 17546 E FR17546 E FR 17546E FR 17546D A FR17546D A FR 17546DA FR 17546 E FR17546 E FR 17546E
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.)
CIE GENERALE DE PHONOGRAPHES
Original Assignee
CIE GENERALE DE PHONOGRAPHES
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 CIE GENERALE DE PHONOGRAPHES filed Critical CIE GENERALE DE PHONOGRAPHES
Application granted granted Critical
Publication of FR17546E publication Critical patent/FR17546E/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
    • G03B21/20—Lamp housings
    • G03B21/206—Control of light source other than position or intensity

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR17546D 1909-11-26 1912-07-13 Improvements to cinematographic projection devices Expired FR17546E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR420574T 1909-11-26
FR17546T 1912-07-13

Publications (1)

Publication Number Publication Date
FR17546E true FR17546E (en) 1913-10-02

Family

ID=1359022

Family Applications (1)

Application Number Title Priority Date Filing Date
FR17546D Expired FR17546E (en) 1909-11-26 1912-07-13 Improvements to cinematographic projection devices

Country Status (1)

Country Link
FR (1) FR17546E (en)

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