FR444323A - écran de projection - Google Patents

écran de projection

Info

Publication number
FR444323A
FR444323A FR444323A FR444323DA FR444323A FR 444323 A FR444323 A FR 444323A FR 444323 A FR444323 A FR 444323A FR 444323D A FR444323D A FR 444323DA FR 444323 A FR444323 A FR 444323A
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
FR444323A
Other languages
English (en)
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.)
O CE PE ORIGINAL CRYSTALL PERL
Original Assignee
O CE PE ORIGINAL CRYSTALL PERL
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 O CE PE ORIGINAL CRYSTALL PERL filed Critical O CE PE ORIGINAL CRYSTALL PERL
Application granted granted Critical
Publication of FR444323A publication Critical patent/FR444323A/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
    • G03B21/60—Projection screens characterised by the nature of the surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR444323A 1912-05-28 1912-05-28 écran de projection Expired FR444323A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR444323T 1912-05-28

Publications (1)

Publication Number Publication Date
FR444323A true FR444323A (fr) 1912-10-15

Family

ID=1485304

Family Applications (1)

Application Number Title Priority Date Filing Date
FR444323A Expired FR444323A (fr) 1912-05-28 1912-05-28 écran de projection

Country Status (1)

Country Link
FR (1) FR444323A (fr)

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