FR877121A - Projection device - Google Patents

Projection device

Info

Publication number
FR877121A
FR877121A FR877121DA FR877121A FR 877121 A FR877121 A FR 877121A FR 877121D A FR877121D A FR 877121DA FR 877121 A FR877121 A FR 877121A
Authority
FR
France
Prior art keywords
projection device
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.)
SCOLAIRE D ETUDES PAR LE FILM
Original Assignee
SCOLAIRE D ETUDES PAR LE FILM
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 SCOLAIRE D ETUDES PAR LE FILM filed Critical SCOLAIRE D ETUDES PAR LE FILM
Application granted granted Critical
Publication of FR877121A publication Critical patent/FR877121A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR877121D 1941-11-21 1941-11-21 Projection device Expired FR877121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR877121T 1941-11-21

Publications (1)

Publication Number Publication Date
FR877121A true FR877121A (en) 1942-11-27

Family

ID=9360879

Family Applications (1)

Application Number Title Priority Date Filing Date
FR877121D Expired FR877121A (en) 1941-11-21 1941-11-21 Projection device

Country Status (1)

Country Link
FR (1) FR877121A (en)

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