BE734613A - - Google Patents

Info

Publication number
BE734613A
BE734613A BE734613DA BE734613A BE 734613 A BE734613 A BE 734613A BE 734613D A BE734613D A BE 734613DA BE 734613 A BE734613 A BE 734613A
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 BE734613A publication Critical patent/BE734613A/xx

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/132Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S353/00Optics: image projectors
    • Y10S353/05Transparency holder accessories

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Overhead Projectors And Projection Screens (AREA)
BE734613D 1968-06-17 1969-06-16 BE734613A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73765068A 1968-06-17 1968-06-17

Publications (1)

Publication Number Publication Date
BE734613A true BE734613A (de) 1969-12-01

Family

ID=24964728

Family Applications (1)

Application Number Title Priority Date Filing Date
BE734613D BE734613A (de) 1968-06-17 1969-06-16

Country Status (11)

Country Link
US (1) US3567318A (de)
JP (1) JPS499770B1 (de)
BE (1) BE734613A (de)
BR (1) BR6909673D0 (de)
CH (1) CH488206A (de)
DE (2) DE1930342B2 (de)
FR (1) FR2011077A1 (de)
GB (1) GB1252318A (de)
IL (1) IL32147A (de)
NL (1) NL6909235A (de)
SE (1) SE354923B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205642A1 (de) * 1982-02-17 1983-08-25 Demolux Gmbh & Co Kg, 6070 Langen Schreibprojektor
FR2670914B1 (fr) * 1990-12-21 1993-07-16 Aerospatiale Appareil de retroprojection de documents.
US5241333A (en) * 1992-10-22 1993-08-31 Minnesota Mining And Manufacturing Company Overhead projector with pivoting lamp changer and color adjustment

Also Published As

Publication number Publication date
GB1252318A (de) 1971-11-03
SE354923B (de) 1973-03-26
DE6923833U (de) 1969-12-18
IL32147A (en) 1973-01-30
DE1930342B2 (de) 1971-11-25
IL32147A0 (en) 1969-07-30
BR6909673D0 (pt) 1973-01-11
FR2011077A1 (de) 1970-02-27
JPS499770B1 (de) 1974-03-06
DE1930342A1 (de) 1970-10-29
US3567318A (en) 1971-03-02
NL6909235A (de) 1969-12-19
CH488206A (de) 1970-03-31

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