FR53758E - Enhancements to devices giving magnified vision of a transparent image - Google Patents

Enhancements to devices giving magnified vision of a transparent image

Info

Publication number
FR53758E
FR53758E FR53758DA FR53758E FR 53758 E FR53758 E FR 53758E FR 53758D A FR53758D A FR 53758DA FR 53758 E FR53758 E FR 53758E
Authority
FR
France
Prior art keywords
enhancements
transparent image
devices giving
magnified vision
magnified
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
Roger-Leger-Marie-Fe Rouanet
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 FR53758E publication Critical patent/FR53758E/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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR53758D 1944-09-22 1944-09-22 Enhancements to devices giving magnified vision of a transparent image Expired FR53758E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR53758T 1944-09-22

Publications (1)

Publication Number Publication Date
FR53758E true FR53758E (en) 1946-09-06

Family

ID=8688246

Family Applications (1)

Application Number Title Priority Date Filing Date
FR53758D Expired FR53758E (en) 1944-09-22 1944-09-22 Enhancements to devices giving magnified vision of a transparent image

Country Status (1)

Country Link
FR (1) FR53758E (en)

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