BE727093A - - Google Patents

Info

Publication number
BE727093A
BE727093A BE727093DA BE727093A BE 727093 A BE727093 A BE 727093A BE 727093D A BE727093D A BE 727093DA BE 727093 A BE727093 A BE 727093A
Authority
BE
Belgium
Application number
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
Publication of BE727093A publication Critical patent/BE727093A/xx

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
    • 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)
  • Projection Apparatus (AREA)
  • Overhead Projectors And Projection Screens (AREA)
BE727093D 1965-08-31 1969-01-20 BE727093A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US483950A US3381574A (en) 1965-08-31 1965-08-31 Apparatus for displaying a projected microfilm image of a drawing

Publications (1)

Publication Number Publication Date
BE727093A true BE727093A (xx) 1969-07-01

Family

ID=23922149

Family Applications (1)

Application Number Title Priority Date Filing Date
BE727093D BE727093A (xx) 1965-08-31 1969-01-20

Country Status (3)

Country Link
US (1) US3381574A (xx)
BE (1) BE727093A (xx)
GB (1) GB1130781A (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3507571A (en) * 1967-04-03 1970-04-21 Walter F White Audio-visual apparatus
US3741624A (en) * 1971-08-04 1973-06-26 C Kuntz Projector device for drawing
US4136938A (en) * 1977-08-16 1979-01-30 Mcgraw-Hill, Inc. Optical projection apparatus
US4842402A (en) * 1986-04-30 1989-06-27 Mcgraw-Hill, Inc. Projection and viewing apparatus
US4991956A (en) * 1989-03-02 1991-02-12 Griffin Stephen L Apparatus for facilitating correlation with a transparency image
US5302790A (en) * 1992-03-16 1994-04-12 Golden Valley Microwave Foods Inc. Microwave popcorn popping bag

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2265992A (en) * 1938-11-02 1941-12-16 Morris B Beck Projector
US2281988A (en) * 1940-05-21 1942-05-05 Spencer Lens Co Ventilating device for projection apparatus
US2543561A (en) * 1949-01-27 1951-02-27 Tracy Madison Harold Method of and apparatus for displaying a projected image of a drawing
US2659267A (en) * 1950-10-07 1953-11-17 Hall & Mcchesney Inc Roll film viewer
US3169442A (en) * 1962-06-21 1965-02-16 Hoppmann Corp Apparatus for plural image projection
US3225650A (en) * 1963-06-07 1965-12-28 Wright Arthur Reginald Apparatus for screening films, slides and the like in adverse light conditions
US3269264A (en) * 1964-05-28 1966-08-30 United States Steel Corp Apparatus for exhibiting couplingthread contour

Also Published As

Publication number Publication date
US3381574A (en) 1968-05-07
GB1130781A (en) 1968-10-16

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