FR48291E - Improvements to episcopic devices - Google Patents

Improvements to episcopic devices

Info

Publication number
FR48291E
FR48291E FR48291DA FR48291E FR 48291 E FR48291 E FR 48291E FR 48291D A FR48291D A FR 48291DA FR 48291 E FR48291 E FR 48291E
Authority
FR
France
Prior art keywords
episcopic
devices
episcopic devices
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.)
Anciens Etablissements Barbier Benard and Turenne SA
Original Assignee
Anciens Etablissements Barbier Benard and Turenne SA
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 Anciens Etablissements Barbier Benard and Turenne SA filed Critical Anciens Etablissements Barbier Benard and Turenne SA
Application granted granted Critical
Publication of FR48291E publication Critical patent/FR48291E/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
    • G03B21/06—Projectors or projection-type viewers; Accessories therefor affording only episcopic projection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR48291D 1937-03-30 1937-03-30 Improvements to episcopic devices Expired FR48291E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR48291T 1937-03-30

Publications (1)

Publication Number Publication Date
FR48291E true FR48291E (en) 1937-12-27

Family

ID=8683649

Family Applications (1)

Application Number Title Priority Date Filing Date
FR48291D Expired FR48291E (en) 1937-03-30 1937-03-30 Improvements to episcopic devices

Country Status (1)

Country Link
FR (1) FR48291E (en)

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