FR1161890A - projection screens - Google Patents

projection screens

Info

Publication number
FR1161890A
FR1161890A FR1161890DA FR1161890A FR 1161890 A FR1161890 A FR 1161890A FR 1161890D A FR1161890D A FR 1161890DA FR 1161890 A FR1161890 A FR 1161890A
Authority
FR
France
Prior art keywords
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)
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.)
Andrew Smith Harkness Ltd
Original Assignee
Andrew Smith Harkness Ltd
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 Andrew Smith Harkness Ltd filed Critical Andrew Smith Harkness Ltd
Application granted granted Critical
Publication of FR1161890A publication Critical patent/FR1161890A/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
    • G03B21/60—Projection screens characterised by the nature of the surface
FR1161890D 1956-04-05 1956-11-30 projection screens Expired FR1161890A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1161890X 1956-04-05

Publications (1)

Publication Number Publication Date
FR1161890A true FR1161890A (en) 1958-09-05

Family

ID=10878781

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1161890D Expired FR1161890A (en) 1956-04-05 1956-11-30 projection screens

Country Status (1)

Country Link
FR (1) FR1161890A (en)

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