FR520742A - Improvements to cinematograph screens and similar applications - Google Patents

Improvements to cinematograph screens and similar applications

Info

Publication number
FR520742A
FR520742A FR520742A FR520742DA FR520742A FR 520742 A FR520742 A FR 520742A FR 520742 A FR520742 A FR 520742A FR 520742D A FR520742D A FR 520742DA FR 520742 A FR520742 A FR 520742A
Authority
FR
France
Prior art keywords
cinematograph
screens
similar applications
applications
similar
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
FR520742A
Other languages
French (fr)
Inventor
Milner Hurd
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 FR520742A publication Critical patent/FR520742A/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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/567—Projection screens for colour projection
    • 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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/562—Screens moving during projection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR520742A 1919-03-22 1920-07-20 Improvements to cinematograph screens and similar applications Expired FR520742A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB520742X 1919-03-22

Publications (1)

Publication Number Publication Date
FR520742A true FR520742A (en) 1921-06-29

Family

ID=10462530

Family Applications (1)

Application Number Title Priority Date Filing Date
FR520742A Expired FR520742A (en) 1919-03-22 1920-07-20 Improvements to cinematograph screens and similar applications

Country Status (1)

Country Link
FR (1) FR520742A (en)

Similar Documents

Publication Publication Date Title
FR520742A (en) Improvements to cinematograph screens and similar applications
FR522983A (en) Improvements made to film screenings
FR522678A (en) Improvements to mannequins
FR514009A (en) Improvements to still cameras and similar devices
FR500337A (en) Improvements to signposts
FR537806A (en) Improvements to retouching screens
FR533518A (en) Improvements to cinematograph screens
FR498125A (en) Refinement to delayed action triggers
FR504982A (en) Improvements to cinematographic devices
FR508679A (en) Improvements to cinematographic devices
FR514854A (en) Improvements to cinematographic devices
FR532106A (en) Improvements to cinematographic devices
FR499759A (en) Improvements to shutters of cinematographic devices
FR507070A (en) Improvements to cameras
FR512641A (en) Projector
FR525673A (en) Improvements to duplicators
CH81621A (en) Cinematograph
FR498511A (en) Improvements to photographic or cinematographic projections
FR528196A (en) Improvements to cinematographs
FR22572E (en) Improvements to phonographs
FR542135A (en) Improvements to cinematographic devices
FR515426A (en) Improvements made and relating to gasifiers
FR518741A (en) Improvements made to lamps and their supports
FR527470A (en) Improvements relating to cinematographic equipment
FR508688A (en) Improvements to pumps and similar devices