DK128134B - Shift projector. - Google Patents

Shift projector.

Info

Publication number
DK128134B
DK128134B DK173471A DK173471A DK128134B DK 128134 B DK128134 B DK 128134B DK 173471 A DK173471 A DK 173471A DK 173471 A DK173471 A DK 173471A DK 128134 B DK128134 B DK 128134B
Authority
DK
Denmark
Prior art keywords
projector
shift
shift projector
Prior art date
Application number
DK173471A
Other languages
Danish (da)
Inventor
G Ritzerfeld
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 DK128134B publication Critical patent/DK128134B/en

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)
  • Drawing Aids And Blackboards (AREA)
DK173471A 1970-04-13 1971-04-13 Shift projector. DK128134B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19707013986 DE7013986U (en) 1970-04-13 1970-04-13 WRITING PROJECTOR.

Publications (1)

Publication Number Publication Date
DK128134B true DK128134B (en) 1974-03-04

Family

ID=6610935

Family Applications (1)

Application Number Title Priority Date Filing Date
DK173471A DK128134B (en) 1970-04-13 1971-04-13 Shift projector.

Country Status (4)

Country Link
DE (1) DE7013986U (en)
DK (1) DK128134B (en)
FR (1) FR2083285A5 (en)
GB (1) GB1316704A (en)

Also Published As

Publication number Publication date
GB1316704A (en) 1973-05-16
DE7013986U (en) 1970-08-27
FR2083285A5 (en) 1971-12-10

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