FR54499E - écran mobile pour projections lumineuses - Google Patents

écran mobile pour projections lumineuses

Info

Publication number
FR54499E
FR54499E FR54499DA FR54499E FR 54499 E FR54499 E FR 54499E FR 54499D A FR54499D A FR 54499DA FR 54499 E FR54499 E FR 54499E
Authority
FR
France
Prior art keywords
mobile screen
light projections
projections
light
mobile
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
Francisque Monin
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 FR54499E publication Critical patent/FR54499E/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
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR54499D 1946-03-29 1946-03-29 écran mobile pour projections lumineuses Expired FR54499E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR54499T 1946-03-29

Publications (1)

Publication Number Publication Date
FR54499E true FR54499E (fr) 1950-05-02

Family

ID=8688948

Family Applications (1)

Application Number Title Priority Date Filing Date
FR54499D Expired FR54499E (fr) 1946-03-29 1946-03-29 écran mobile pour projections lumineuses

Country Status (1)

Country Link
FR (1) FR54499E (fr)

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