Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1978-04-06
1980-08-26
Ansher, Bernard
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1608
Patent
active
D02565897
REFERENCES:
patent: D194709 (1963-02-01), Vernon
patent: 597758 (1898-01-01), Bausch
patent: 1557605 (1925-10-01), O'Meara
patent: 2682806 (1954-07-01), Gordenier
patent: 3446127 (1969-05-01), Silverman et al.
Ansher Bernard
Burns Robert E.
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