FI916012A7 - Overheadprojektor. - Google Patents

Overheadprojektor. Download PDF

Info

Publication number
FI916012A7
FI916012A7 FI916012A FI916012A FI916012A7 FI 916012 A7 FI916012 A7 FI 916012A7 FI 916012 A FI916012 A FI 916012A FI 916012 A FI916012 A FI 916012A FI 916012 A7 FI916012 A7 FI 916012A7
Authority
FI
Finland
Prior art keywords
overhead projector
projector
overhead
Prior art date
Application number
FI916012A
Other languages
English (en)
Finnish (fi)
Other versions
FI916012A0 (fi
Inventor
Willi Strohmeyer
Original Assignee
Geha Werke Gmbh
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 by Geha Werke Gmbh filed Critical Geha Werke Gmbh
Publication of FI916012A0 publication Critical patent/FI916012A0/fi
Publication of FI916012A7 publication Critical patent/FI916012A7/fi

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
    • G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Projection Apparatus (AREA)
FI916012A 1990-12-24 1991-12-19 Overheadprojektor. FI916012A7 (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4041778A DE4041778A1 (de) 1990-12-24 1990-12-24 Arbeitsprojektor

Publications (2)

Publication Number Publication Date
FI916012A0 FI916012A0 (fi) 1991-12-19
FI916012A7 true FI916012A7 (fi) 1992-06-25

Family

ID=6421440

Family Applications (1)

Application Number Title Priority Date Filing Date
FI916012A FI916012A7 (fi) 1990-12-24 1991-12-19 Overheadprojektor.

Country Status (6)

Country Link
EP (1) EP0492213B1 (https=)
DE (2) DE4041778A1 (https=)
DK (1) DK0492213T3 (https=)
ES (1) ES2075314T3 (https=)
FI (1) FI916012A7 (https=)
GR (1) GR3017520T3 (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9209310U1 (de) * 1992-07-09 1992-11-19 AV-Kommunikation Anders + Kern GmbH & Co KG, 2000 Norderstedt Durchlichtprojektor
DE10007830A1 (de) * 2000-02-21 2001-08-23 Franz Josef Donner Overheadprojektor
EP1255147A3 (en) * 2001-05-03 2004-01-02 Lance Harold Rayner Visual aid

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711194A (en) * 1965-10-24 1973-01-16 H Wilson Overhead projection apparatus
DE3205643A1 (de) * 1982-02-17 1983-08-25 Demolux Gmbh & Co Kg, 6070 Langen Schreibprojektor
DE3519506A1 (de) * 1985-05-31 1986-12-04 Demolux Gmbh & Co Kg, 6070 Langen Overhead-projektor
DE3542045A1 (de) * 1985-11-28 1987-06-04 Neuland Gmbh Kommunikation Demonstrationstafel

Also Published As

Publication number Publication date
EP0492213A2 (de) 1992-07-01
DE4041778C2 (https=) 1992-11-19
FI916012A0 (fi) 1991-12-19
GR3017520T3 (en) 1995-12-31
EP0492213B1 (de) 1995-07-05
DK0492213T3 (da) 1995-11-20
DE59105931D1 (de) 1995-08-10
EP0492213A3 (en) 1993-03-17
ES2075314T3 (es) 1995-10-01
DE4041778A1 (de) 1992-07-02

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Legal Events

Date Code Title Description
FD Application lapsed