FR517692A - écrans cinématographiques translucides - Google Patents

écrans cinématographiques translucides

Info

Publication number
FR517692A
FR517692A FR517692A FR517692DA FR517692A FR 517692 A FR517692 A FR 517692A FR 517692 A FR517692 A FR 517692A FR 517692D A FR517692D A FR 517692DA FR 517692 A FR517692 A FR 517692A
Authority
FR
France
Prior art keywords
cinematographic
translucent
screens
translucent cinematographic
cinematographic screens
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
FR517692A
Other languages
English (en)
Inventor
John Frederick Robert Troeger
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 FR517692A publication Critical patent/FR517692A/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
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR517692A 1913-12-24 1920-06-23 écrans cinématographiques translucides Expired FR517692A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US517692XA 1913-12-24 1913-12-24

Publications (1)

Publication Number Publication Date
FR517692A true FR517692A (fr) 1921-05-10

Family

ID=21973273

Family Applications (1)

Application Number Title Priority Date Filing Date
FR517692A Expired FR517692A (fr) 1913-12-24 1920-06-23 écrans cinématographiques translucides

Country Status (1)

Country Link
FR (1) FR517692A (fr)

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