FR862028A - - Google Patents

Info

Publication number
FR862028A
FR862028A FR862028DA FR862028A FR 862028 A FR862028 A FR 862028A FR 862028D A FR862028D A FR 862028DA FR 862028 A FR862028 A FR 862028A
Authority
FR
France
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
Publication date
Application granted granted Critical
Publication of FR862028A publication Critical patent/FR862028A/fr
Expired legal-status Critical Current

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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
    • G03B21/115—Projectors with built-in or built-on screen for microfilm reading of microfiches

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR862028D Expired FR862028A (fr)

Publications (1)

Publication Number Publication Date
FR862028A true FR862028A (fr) 1941-03-04

Family

ID=1555275

Family Applications (1)

Application Number Title Priority Date Filing Date
FR862028D Expired FR862028A (fr)

Country Status (1)

Country Link
FR (1) FR862028A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565496A (en) * 1948-01-06 1951-08-28 Herman L Gordon Microfilm reader and projection apparatus
DE1028807B (de) * 1955-01-25 1958-04-24 Theodor Koerner Vorrichtung zum mittels einer Ableselupe beiderseitigen Ablesen von in Mikrowiedergabe dargestellten Schriftzeichen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565496A (en) * 1948-01-06 1951-08-28 Herman L Gordon Microfilm reader and projection apparatus
DE1028807B (de) * 1955-01-25 1958-04-24 Theodor Koerner Vorrichtung zum mittels einer Ableselupe beiderseitigen Ablesen von in Mikrowiedergabe dargestellten Schriftzeichen

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