FR789904A - Process for producing heliographs and device for implementing this process - Google Patents

Process for producing heliographs and device for implementing this process

Info

Publication number
FR789904A
FR789904A FR789904DA FR789904A FR 789904 A FR789904 A FR 789904A FR 789904D A FR789904D A FR 789904DA FR 789904 A FR789904 A FR 789904A
Authority
FR
France
Prior art keywords
heliographs
implementing
producing
producing heliographs
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR789904A publication Critical patent/FR789904A/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)
FR789904D 1934-05-18 1935-05-10 Process for producing heliographs and device for implementing this process Expired FR789904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE789904X 1934-05-18

Publications (1)

Publication Number Publication Date
FR789904A true FR789904A (en) 1935-11-08

Family

ID=6699783

Family Applications (1)

Application Number Title Priority Date Filing Date
FR789904D Expired FR789904A (en) 1934-05-18 1935-05-10 Process for producing heliographs and device for implementing this process

Country Status (1)

Country Link
FR (1) FR789904A (en)

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