Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1979-09-24
1981-10-06
Caun, Peter M.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02611473
REFERENCES:
patent: D254975 (1980-05-01), Gambrell et al.
patent: 4134581 (1979-01-01), Johnson et al.
Datapro Research Corporation, Jan. 1978, Model 3M Secretary III.
Caun Peter M.
Gradco Dendoki, Inc.
Lee, Jr. Newton H.
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