FR662140A - Improvements to projection screens for advertising - Google Patents

Improvements to projection screens for advertising

Info

Publication number
FR662140A
FR662140A FR662140DA FR662140A FR 662140 A FR662140 A FR 662140A FR 662140D A FR662140D A FR 662140DA FR 662140 A FR662140 A FR 662140A
Authority
FR
France
Prior art keywords
advertising
projection screens
screens
projection
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
French (fr)
Inventor
Remigius Geyling
Paul Planer
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 FR662140A publication Critical patent/FR662140A/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
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR662140D 1927-08-13 1928-08-10 Improvements to projection screens for advertising Expired FR662140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT662140X 1927-08-13

Publications (1)

Publication Number Publication Date
FR662140A true FR662140A (en) 1929-08-02

Family

ID=3678436

Family Applications (1)

Application Number Title Priority Date Filing Date
FR662140D Expired FR662140A (en) 1927-08-13 1928-08-10 Improvements to projection screens for advertising

Country Status (1)

Country Link
FR (1) FR662140A (en)

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