FR520742A - Perfectionnements aux écrans de cinématographe et applications similaires - Google Patents

Perfectionnements aux écrans de cinématographe et applications similaires

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
English (en)
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/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
    • G03B21/54—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 Perfectionnements aux écrans de cinématographe et applications similaires Expired FR520742A (fr)

Applications Claiming Priority (1)

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

Publications (1)

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

Family

ID=10462530

Family Applications (1)

Application Number Title Priority Date Filing Date
FR520742A Expired FR520742A (fr) 1919-03-22 1920-07-20 Perfectionnements aux écrans de cinématographe et applications similaires

Country Status (1)

Country Link
FR (1) FR520742A (fr)

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