CH566568A5 - - Google Patents

Info

Publication number
CH566568A5
CH566568A5 CH595574A CH595574A CH566568A5 CH 566568 A5 CH566568 A5 CH 566568A5 CH 595574 A CH595574 A CH 595574A CH 595574 A CH595574 A CH 595574A CH 566568 A5 CH566568 A5 CH 566568A5
Authority
CH
Switzerland
Application number
CH595574A
Original Assignee
Ritzerfeld Gerhard
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 Ritzerfeld Gerhard filed Critical Ritzerfeld Gerhard
Publication of CH566568A5 publication Critical patent/CH566568A5/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
    • G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Overhead Projectors And Projection Screens (AREA)
CH595574A 1973-06-27 1974-05-01 CH566568A5 (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732333770 DE2333770A1 (de) 1973-06-27 1973-06-27 Tageslichtprojektor

Publications (1)

Publication Number Publication Date
CH566568A5 true CH566568A5 (cs) 1975-09-15

Family

ID=5885804

Family Applications (1)

Application Number Title Priority Date Filing Date
CH595574A CH566568A5 (cs) 1973-06-27 1974-05-01

Country Status (6)

Country Link
BE (1) BE814852A (cs)
CH (1) CH566568A5 (cs)
DE (1) DE2333770A1 (cs)
DK (1) DK337674A (cs)
FR (1) FR2235628A5 (cs)
GB (1) GB1429283A (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410002A1 (de) * 1984-03-19 1985-09-19 Demolux Gmbh & Co Kg, 6070 Langen Overhead-projektor
US6497489B1 (en) * 2001-08-29 2002-12-24 Benq Corporation Projector with guiding rib in vent

Also Published As

Publication number Publication date
DK337674A (cs) 1975-02-10
GB1429283A (en) 1976-03-24
BE814852A (fr) 1974-11-18
DE2333770A1 (de) 1975-01-23
FR2235628A5 (cs) 1975-01-24

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Legal Events

Date Code Title Description
PL Patent ceased
PL Patent ceased