FR543691A - Perfectionnements aux appareils de projection cinématographique - Google Patents

Perfectionnements aux appareils de projection cinématographique

Info

Publication number
FR543691A
FR543691A FR543691DA FR543691A FR 543691 A FR543691 A FR 543691A FR 543691D A FR543691D A FR 543691DA FR 543691 A FR543691 A FR 543691A
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
English (en)
Inventor
Ernst Fegraeus
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 FR543691A publication Critical patent/FR543691A/fr
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
    • 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)
FR543691D 1921-11-18 1921-11-18 Perfectionnements aux appareils de projection cinématographique Expired FR543691A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR543691T 1921-11-18

Publications (1)

Publication Number Publication Date
FR543691A true FR543691A (fr) 1922-09-07

Family

ID=8931773

Family Applications (1)

Application Number Title Priority Date Filing Date
FR543691D Expired FR543691A (fr) 1921-11-18 1921-11-18 Perfectionnements aux appareils de projection cinématographique

Country Status (1)

Country Link
FR (1) FR543691A (fr)

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