FR941904A - Perfectionnements aux appareils de projection - Google Patents

Perfectionnements aux appareils de projection

Info

Publication number
FR941904A
FR941904A FR941904DA FR941904A FR 941904 A FR941904 A FR 941904A FR 941904D A FR941904D A FR 941904DA FR 941904 A FR941904 A FR 941904A
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
English (en)
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.)
Diebold Nixdorf Inc
Original Assignee
Diebold Inc
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 Diebold Inc filed Critical Diebold Inc
Application granted granted Critical
Publication of FR941904A publication Critical patent/FR941904A/fr
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
    • G03B21/10—Projectors with built-in or built-on screen
    • G03B21/11—Projectors with built-in or built-on screen for microfilm reading
    • G03B21/111—Projectors with built-in or built-on screen for microfilm reading of roll films

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR941904D 1945-03-07 1947-02-17 Perfectionnements aux appareils de projection Expired FR941904A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US941904XA 1945-03-07 1945-03-07

Publications (1)

Publication Number Publication Date
FR941904A true FR941904A (fr) 1949-01-25

Family

ID=22243696

Family Applications (1)

Application Number Title Priority Date Filing Date
FR941904D Expired FR941904A (fr) 1945-03-07 1947-02-17 Perfectionnements aux appareils de projection

Country Status (1)

Country Link
FR (1) FR941904A (fr)

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