FR1015773A - Optical projection or magnifying device - Google Patents

Optical projection or magnifying device

Info

Publication number
FR1015773A
FR1015773A FR1015773DA FR1015773A FR 1015773 A FR1015773 A FR 1015773A FR 1015773D A FR1015773D A FR 1015773DA FR 1015773 A FR1015773 A FR 1015773A
Authority
FR
France
Prior art keywords
optical projection
magnifying device
magnifying
projection
optical
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
Harold Edward Alexander
Charles Frederick Cook
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.)
Sun Printers Ltd
Original Assignee
Sun Printers Ltd
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 Sun Printers Ltd filed Critical Sun Printers Ltd
Application granted granted Critical
Publication of FR1015773A publication Critical patent/FR1015773A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
FR1015773D 1950-03-31 1950-03-31 Optical projection or magnifying device Expired FR1015773A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1015773T 1950-03-31

Publications (1)

Publication Number Publication Date
FR1015773A true FR1015773A (en) 1952-10-23

Family

ID=9573232

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1015773D Expired FR1015773A (en) 1950-03-31 1950-03-31 Optical projection or magnifying device

Country Status (1)

Country Link
FR (1) FR1015773A (en)

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