FR460637A - projection screen - Google Patents

projection screen

Info

Publication number
FR460637A
FR460637A FR460637A FR460637DA FR460637A FR 460637 A FR460637 A FR 460637A FR 460637 A FR460637 A FR 460637A FR 460637D A FR460637D A FR 460637DA FR 460637 A FR460637 A FR 460637A
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
FR460637A
Other languages
French (fr)
Inventor
Frank-William Hay
Emile Dreyfus
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.)
FRANK WILLIAM HAY
Original Assignee
FRANK WILLIAM HAY
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 FRANK WILLIAM HAY filed Critical FRANK WILLIAM HAY
Application granted granted Critical
Publication of FR460637A publication Critical patent/FR460637A/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)
FR460637A 1912-07-21 1913-07-18 projection screen Expired FR460637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE460637X 1912-07-21

Publications (1)

Publication Number Publication Date
FR460637A true FR460637A (en) 1913-12-08

Family

ID=1500015

Family Applications (1)

Application Number Title Priority Date Filing Date
FR460637A Expired FR460637A (en) 1912-07-21 1913-07-18 projection screen

Country Status (1)

Country Link
FR (1) FR460637A (en)

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