Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1975-11-25
1977-06-28
Stearman, Joel
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1601
Patent
active
D02448513
REFERENCES:
patent: D228681 (1973-10-01), Swayze
patent: D229862 (1974-01-01), Hansen
patent: D230514 (1974-02-01), Emmerling
patent: D234542 (1975-03-01), Quinn
patent: D236546 (1975-08-01), Shimano
Geoffrey, Jr. Eugene E.
Rademaker C. A.
Stearman Joel
Sunpack Corporation
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