Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-01-08
1977-12-13
Ansher, Bernard
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1606
Patent
active
D02466538
REFERENCES:
patent: D229445 (1973-11-01), Hornschu et al.
patent: D242243 (1976-11-01), Takahashi et al.
patent: 3604779 (1971-09-01), Reinhold
patent: 3817594 (1974-06-01), Fischer
Ansher Bernard
Nippon Kogaku K.K.
Shapiro Harry G.
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