Projection kaleidoscope

Details Projection kaleidoscope Projection kaleidoscope

1979-03-23

1982-06-22

Caun, Peter M.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D21 60, D1602

Patent

active

D02650959

REFERENCES:
patent: D25391 (1896-04-01), Williams
patent: 3000123 (1961-09-01), Hicks
patent: 3809879 (1974-05-01), Gonzalez

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