SE371301B - - Google Patents

Info

Publication number
SE371301B
SE371301B SE474971A SE474971A SE371301B SE 371301 B SE371301 B SE 371301B SE 474971 A SE474971 A SE 474971A SE 474971 A SE474971 A SE 474971A SE 371301 B SE371301 B SE 371301B
Authority
SE
Sweden
Application number
SE474971A
Inventor
G Ritzerfeldt
Original Assignee
G Ritzerfeldt
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 G Ritzerfeldt filed Critical G Ritzerfeldt
Publication of SE371301B publication Critical patent/SE371301B/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
SE474971A 1970-04-09 1971-04-13 SE371301B (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19707013647 DE7013647U (de) 1970-04-09 1970-04-09 Tageslichtprojektor.

Publications (1)

Publication Number Publication Date
SE371301B true SE371301B (enExample) 1974-11-11

Family

ID=6610880

Family Applications (1)

Application Number Title Priority Date Filing Date
SE474971A SE371301B (enExample) 1970-04-09 1971-04-13

Country Status (5)

Country Link
CH (1) CH528750A (enExample)
DE (1) DE7013647U (enExample)
DK (1) DK126878B (enExample)
FR (1) FR2083273A5 (enExample)
SE (1) SE371301B (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3241956A1 (de) * 1982-11-12 1984-05-17 Demolux Gmbh & Co Kg, 6070 Langen Stehbildwerfer

Also Published As

Publication number Publication date
CH528750A (de) 1972-09-30
DE7013647U (de) 1970-08-20
DK126878B (da) 1973-08-27
FR2083273A5 (enExample) 1971-12-10

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