Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-02-17
1977-12-27
Lucas, Susan J.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1606
Patent
active
D02467925
REFERENCES:
patent: D228674 (1973-10-01), Shindler
Optician, Apr. 11, 1969, Adverts IX, Frames, (center).
Optician, Jan. 24, 1975, p. 25-Frames No. 7.
American Optical Corporation
Lucas Susan J.
Nealon William C.
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