DE3208723A1 - Schreibprojektor - Google Patents

Schreibprojektor

Info

Publication number
DE3208723A1
DE3208723A1 DE19823208723 DE3208723A DE3208723A1 DE 3208723 A1 DE3208723 A1 DE 3208723A1 DE 19823208723 DE19823208723 DE 19823208723 DE 3208723 A DE3208723 A DE 3208723A DE 3208723 A1 DE3208723 A1 DE 3208723A1
Authority
DE
Germany
Prior art keywords
angular
cuboid
writing
housing
leg
Prior art date
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.)
Granted
Application number
DE19823208723
Other languages
German (de)
English (en)
Other versions
DE3208723C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Des Erfinders Auf Nennung Verzicht
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GRUNWALD PROJEKTOREN AG RUGGELL LI
Original Assignee
Demolux & Co Kg 6070 Langen De GmbH
DEMOLUX
Demolux & Co Kg 6070 Langen 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 Demolux & Co Kg 6070 Langen De GmbH, DEMOLUX, Demolux & Co Kg 6070 Langen GmbH filed Critical Demolux & Co Kg 6070 Langen De GmbH
Priority to DE19823208723 priority Critical patent/DE3208723A1/de
Publication of DE3208723A1 publication Critical patent/DE3208723A1/de
Application granted granted Critical
Publication of DE3208723C2 publication Critical patent/DE3208723C2/de
Granted legal-status Critical Current

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)
  • Projection Apparatus (AREA)
DE19823208723 1982-03-11 1982-03-11 Schreibprojektor Granted DE3208723A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823208723 DE3208723A1 (de) 1982-03-11 1982-03-11 Schreibprojektor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823208723 DE3208723A1 (de) 1982-03-11 1982-03-11 Schreibprojektor

Publications (2)

Publication Number Publication Date
DE3208723A1 true DE3208723A1 (de) 1983-09-22
DE3208723C2 DE3208723C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-12-06

Family

ID=6157878

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823208723 Granted DE3208723A1 (de) 1982-03-11 1982-03-11 Schreibprojektor

Country Status (1)

Country Link
DE (1) DE3208723A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991000546A1 (en) * 1987-12-30 1991-01-10 Educatek Oy Overhead projector

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2212032A1 (de) * 1972-03-13 1973-09-20 Schidlowski & Co Ges Fuer Appa Overhead-projektor
DE2507515A1 (de) * 1975-02-21 1976-09-02 Klaus W Reiser & Co Schreibprojektor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2212032A1 (de) * 1972-03-13 1973-09-20 Schidlowski & Co Ges Fuer Appa Overhead-projektor
DE2507515A1 (de) * 1975-02-21 1976-09-02 Klaus W Reiser & Co Schreibprojektor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991000546A1 (en) * 1987-12-30 1991-01-10 Educatek Oy Overhead projector
US5214459A (en) * 1987-12-30 1993-05-25 Educatek Oy Overhead projectors

Also Published As

Publication number Publication date
DE3208723C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-12-06

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Free format text: JUNIUS, W., DIPL.-PHYS. DR., PAT.-ANW., 30519 HANNOVER

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