FR1051768A - Apparatus for drawing plans in artificial light - Google Patents

Apparatus for drawing plans in artificial light

Info

Publication number
FR1051768A
FR1051768A FR1051768DA FR1051768A FR 1051768 A FR1051768 A FR 1051768A FR 1051768D A FR1051768D A FR 1051768DA FR 1051768 A FR1051768 A FR 1051768A
Authority
FR
France
Prior art keywords
artificial light
plans
drawing plans
artificial
light
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
Fridolin Forster
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 filed Critical
Application granted granted Critical
Publication of FR1051768A publication Critical patent/FR1051768A/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
    • G03B27/00—Photographic printing apparatus
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/14—Details
    • G03B27/18—Maintaining or producing contact pressure between original and light-sensitive material
    • G03B27/22—Maintaining or producing contact pressure between original and light-sensitive material by stretching over a curved surface
FR1051768D 1951-02-22 1952-02-22 Apparatus for drawing plans in artificial light Expired FR1051768A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1051768X 1951-02-22

Publications (1)

Publication Number Publication Date
FR1051768A true FR1051768A (en) 1954-01-19

Family

ID=4554870

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1051768D Expired FR1051768A (en) 1951-02-22 1952-02-22 Apparatus for drawing plans in artificial light

Country Status (1)

Country Link
FR (1) FR1051768A (en)

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