FR378614A - écran de projection - Google Patents

écran de projection

Info

Publication number
FR378614A
FR378614A FR378614DA FR378614A FR 378614 A FR378614 A FR 378614A FR 378614D A FR378614D A FR 378614DA FR 378614 A FR378614 A FR 378614A
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
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.)
L GAUMONT ET CIE SOC
Original Assignee
L GAUMONT ET CIE SOC
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 L GAUMONT ET CIE SOC filed Critical L GAUMONT ET CIE SOC
Application granted granted Critical
Publication of FR378614A publication Critical patent/FR378614A/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
    • G03B21/565—Screens allowing free passage of sound

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR378614D 1906-08-16 1906-08-16 écran de projection Expired FR378614A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR378614T 1906-08-16

Publications (1)

Publication Number Publication Date
FR378614A true FR378614A (fr) 1907-10-10

Family

ID=1424958

Family Applications (1)

Application Number Title Priority Date Filing Date
FR378614D Expired FR378614A (fr) 1906-08-16 1906-08-16 écran de projection

Country Status (1)

Country Link
FR (1) FR378614A (fr)

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