FR54577E - Large capacity machines for classifying and reading microfilm - Google Patents

Large capacity machines for classifying and reading microfilm

Info

Publication number
FR54577E
FR54577E FR54577DA FR54577E FR 54577 E FR54577 E FR 54577E FR 54577D A FR54577D A FR 54577DA FR 54577 E FR54577 E FR 54577E
Authority
FR
France
Prior art keywords
classifying
large capacity
capacity machines
microfilm
reading
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
Gustave-Roger Moulin
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 filed Critical
Application granted granted Critical
Publication of FR54577E publication Critical patent/FR54577E/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
FR54577D 1946-06-15 1946-06-15 Large capacity machines for classifying and reading microfilm Expired FR54577E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR54577T 1946-06-15

Publications (1)

Publication Number Publication Date
FR54577E true FR54577E (en) 1950-05-04

Family

ID=8689021

Family Applications (1)

Application Number Title Priority Date Filing Date
FR54577D Expired FR54577E (en) 1946-06-15 1946-06-15 Large capacity machines for classifying and reading microfilm

Country Status (1)

Country Link
FR (1) FR54577E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3199674A (en) * 1961-08-15 1965-08-10 Ok Partnership Ltd Data retrieval apparatus and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3199674A (en) * 1961-08-15 1965-08-10 Ok Partnership Ltd Data retrieval apparatus and method

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