FR705624A - Improvements in drawing machines - Google Patents

Improvements in drawing machines

Info

Publication number
FR705624A
FR705624A FR705624DA FR705624A FR 705624 A FR705624 A FR 705624A FR 705624D A FR705624D A FR 705624DA FR 705624 A FR705624 A FR 705624A
Authority
FR
France
Prior art keywords
drawing machines
machines
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
Tony Selmersheim
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 FR705624A publication Critical patent/FR705624A/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
FR705624D 1930-02-01 1930-02-01 Improvements in drawing machines Expired FR705624A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR705624T 1930-02-01

Publications (1)

Publication Number Publication Date
FR705624A true FR705624A (en) 1931-06-10

Family

ID=9067266

Family Applications (1)

Application Number Title Priority Date Filing Date
FR705624D Expired FR705624A (en) 1930-02-01 1930-02-01 Improvements in drawing machines

Country Status (1)

Country Link
FR (1) FR705624A (en)

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