BE702598A - - Google Patents

Info

Publication number
BE702598A
BE702598A BE702598DA BE702598A BE 702598 A BE702598 A BE 702598A BE 702598D A BE702598D A BE 702598DA BE 702598 A BE702598 A BE 702598A
Authority
BE
Belgium
Prior art keywords
upright
screen
collar
feet
support
Prior art date
Application number
Other languages
English (en)
French (fr)
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
Priority claimed from US449231A external-priority patent/US3309049A/en
Priority claimed from FR97355A external-priority patent/FR1513035A/fr
Application filed filed Critical
Publication of BE702598A publication Critical patent/BE702598A/fr

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)
  • Overhead Projectors And Projection Screens (AREA)
BE702598D 1965-04-19 1967-08-11 BE702598A (enrdf_load_stackoverflow)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US449231A US3309049A (en) 1965-04-19 1965-04-19 Stand for projection screen
FR97355A FR1513035A (fr) 1967-02-28 1967-03-03 Trépied pliant pour écran de projection

Publications (1)

Publication Number Publication Date
BE702598A true BE702598A (enrdf_load_stackoverflow) 1968-01-15

Family

ID=26174847

Family Applications (1)

Application Number Title Priority Date Filing Date
BE702598D BE702598A (enrdf_load_stackoverflow) 1965-04-19 1967-08-11

Country Status (1)

Country Link
BE (1) BE702598A (enrdf_load_stackoverflow)

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