FR947681A - Improvements to film holders - Google Patents

Improvements to film holders

Info

Publication number
FR947681A
FR947681A FR947681DA FR947681A FR 947681 A FR947681 A FR 947681A FR 947681D A FR947681D A FR 947681DA FR 947681 A FR947681 A FR 947681A
Authority
FR
France
Prior art keywords
film holders
holders
film
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston 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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR947681A publication Critical patent/FR947681A/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
    • G03B21/10—Projectors with built-in or built-on screen
    • G03B21/11—Projectors with built-in or built-on screen for microfilm reading

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR947681D 1942-03-26 1942-03-26 Improvements to film holders Expired FR947681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR947681T 1942-03-26

Publications (1)

Publication Number Publication Date
FR947681A true FR947681A (en) 1949-07-08

Family

ID=9473592

Family Applications (1)

Application Number Title Priority Date Filing Date
FR947681D Expired FR947681A (en) 1942-03-26 1942-03-26 Improvements to film holders

Country Status (1)

Country Link
FR (1) FR947681A (en)

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