FR1071252A - projection screen - Google Patents

projection screen

Info

Publication number
FR1071252A
FR1071252A FR1071252DA FR1071252A FR 1071252 A FR1071252 A FR 1071252A FR 1071252D A FR1071252D A FR 1071252DA FR 1071252 A FR1071252 A FR 1071252A
Authority
FR
France
Prior art keywords
projection screen
projection
screen
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.)
GLOWMETER CORP
Original Assignee
GLOWMETER CORP
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 GLOWMETER CORP filed Critical GLOWMETER CORP
Application granted granted Critical
Publication of FR1071252A publication Critical patent/FR1071252A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1071252D 1951-11-23 1952-11-22 projection screen Expired FR1071252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1071252XA 1951-11-23 1951-11-23

Publications (1)

Publication Number Publication Date
FR1071252A true FR1071252A (en) 1954-08-30

Family

ID=22314986

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1071252D Expired FR1071252A (en) 1951-11-23 1952-11-22 projection screen

Country Status (1)

Country Link
FR (1) FR1071252A (en)

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