Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-03-02
1979-07-03
Ansher, Bernard
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D 8 72, D1603
Patent
active
D02522756
REFERENCES:
patent: D247673 (1978-04-01), Behun
patent: D248482 (1978-07-01), Schaffer
patent: 2668591 (1954-02-01), Winters
patent: 2996982 (1961-08-01), Alm
patent: 3177746 (1965-04-01), Langer
patent: 4060236 (1977-11-01), Carstedt
Ansher Bernard
Ralabate James J.
Xerox Corporation
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