Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-04-05
1978-07-04
Ansher, Bernard
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
350248, 10606
Patent
active
D02484013
REFERENCES:
patent: 1148550 (1915-08-01), Thompson
patent: 3955884 (1976-05-01), Del Pesco, Sr.
patent: 4037940 (1977-07-01), Yates et al.
Ansher Bernard
Del Pesco Systems, Inc.
Salter Elliott A.
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