FR863440A - Projection device - Google Patents

Projection device

Info

Publication number
FR863440A
FR863440A FR863440DA FR863440A FR 863440 A FR863440 A FR 863440A FR 863440D A FR863440D A FR 863440DA FR 863440 A FR863440 A FR 863440A
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)
Inventor
Louis De Saint-Rat
Atherton Seidell
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.)
Ct Nat D Etudes Et De Rech S D
Original Assignee
Ct Nat D Etudes Et De Rech S D
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 Ct Nat D Etudes Et De Rech S D filed Critical Ct Nat D Etudes Et De Rech S D
Application granted granted Critical
Publication of FR863440A publication Critical patent/FR863440A/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
    • G03B21/10—Projectors with built-in or built-on screen
    • G03B21/11—Projectors with built-in or built-on screen for microfilm reading
    • 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/326—Enlargers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR863440D 1940-02-15 1940-02-15 Projection device Expired FR863440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR863440T 1940-02-15

Publications (1)

Publication Number Publication Date
FR863440A true FR863440A (en) 1941-04-01

Family

ID=9343234

Family Applications (1)

Application Number Title Priority Date Filing Date
FR863440D Expired FR863440A (en) 1940-02-15 1940-02-15 Projection device

Country Status (1)

Country Link
FR (1) FR863440A (en)

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