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BE466684A - - Google Patents
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BE466684A - - Google Patents

Info

Publication number
BE466684A
BE466684A BE466684DA BE466684A BE 466684 A BE466684 A BE 466684A BE 466684D A BE466684D A BE 466684DA BE 466684 A BE466684 A BE 466684A
Authority
BE
Belgium
Prior art keywords
film
films
plate
reading
microfilms
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE466684A publication Critical patent/BE466684A/fr

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)
  • Projection Apparatus (AREA)
BE466684D BE466684A (sr)

Publications (1)

Publication Number Publication Date
BE466684A true BE466684A (sr)

Family

ID=117934

Family Applications (1)

Application Number Title Priority Date Filing Date
BE466684D BE466684A (sr)

Country Status (1)

Country Link
BE (1) BE466684A (sr)

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