FR855008A - Improvements made to heliographic machines - Google Patents

Improvements made to heliographic machines

Info

Publication number
FR855008A
FR855008A FR855008DA FR855008A FR 855008 A FR855008 A FR 855008A FR 855008D A FR855008D A FR 855008DA FR 855008 A FR855008 A FR 855008A
Authority
FR
France
Prior art keywords
heliographic
machines
improvements made
heliographic 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
Le Flohic
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 FR855008A publication Critical patent/FR855008A/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
    • G03B27/16—Illumination arrangements, e.g. positioning of lamps, positioning of reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR855008D 1939-05-20 1939-05-20 Improvements made to heliographic machines Expired FR855008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR855008T 1939-05-20

Publications (1)

Publication Number Publication Date
FR855008A true FR855008A (en) 1940-04-30

Family

ID=9328017

Family Applications (1)

Application Number Title Priority Date Filing Date
FR855008D Expired FR855008A (en) 1939-05-20 1939-05-20 Improvements made to heliographic machines

Country Status (1)

Country Link
FR (1) FR855008A (en)

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