FR1054366A - Improvements to projection devices - Google Patents

Improvements to projection devices

Info

Publication number
FR1054366A
FR1054366A FR1054366DA FR1054366A FR 1054366 A FR1054366 A FR 1054366A FR 1054366D A FR1054366D A FR 1054366DA FR 1054366 A FR1054366 A FR 1054366A
Authority
FR
France
Prior art keywords
projection devices
projection
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)
Inventor
Adrien Couderc
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.)
COMM POTASSES D ALSACE SOC
Original Assignee
COMM POTASSES D ALSACE SOC
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 COMM POTASSES D ALSACE SOC filed Critical COMM POTASSES D ALSACE SOC
Application granted granted Critical
Publication of FR1054366A publication Critical patent/FR1054366A/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)
FR1054366D 1952-01-29 1952-01-29 Improvements to projection devices Expired FR1054366A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1054366T 1952-01-29

Publications (1)

Publication Number Publication Date
FR1054366A true FR1054366A (en) 1954-02-10

Family

ID=9596368

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1054366D Expired FR1054366A (en) 1952-01-29 1952-01-29 Improvements to projection devices

Country Status (1)

Country Link
FR (1) FR1054366A (en)

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