FR668236A - Episcopic projection apparatus - Google Patents

Episcopic projection apparatus

Info

Publication number
FR668236A
FR668236A FR668236DA FR668236A FR 668236 A FR668236 A FR 668236A FR 668236D A FR668236D A FR 668236DA FR 668236 A FR668236 A FR 668236A
Authority
FR
France
Prior art keywords
projection apparatus
episcopic projection
episcopic
projection
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.)
EVANS BROTHERS LONDON Ltd
Original Assignee
EVANS BROTHERS LONDON 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 EVANS BROTHERS LONDON Ltd filed Critical EVANS BROTHERS LONDON Ltd
Application granted granted Critical
Publication of FR668236A publication Critical patent/FR668236A/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)
FR668236D 1929-01-08 1929-01-08 Episcopic projection apparatus Expired FR668236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR668236T 1929-01-08

Publications (1)

Publication Number Publication Date
FR668236A true FR668236A (en) 1929-10-29

Family

ID=9014883

Family Applications (1)

Application Number Title Priority Date Filing Date
FR668236D Expired FR668236A (en) 1929-01-08 1929-01-08 Episcopic projection apparatus

Country Status (1)

Country Link
FR (1) FR668236A (en)

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