Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-02-05
1983-12-13
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02717751
REFERENCES:
patent: D246526 (1977-11-01), Kurozumi
patent: D261272 (1981-10-01), Lawrence
patent: D261659 (1981-11-01), Imada
patent: D262375 (1981-12-01), Imada
patent: D263600 (1982-03-01), Furukawa
patent: D263848 (1982-04-01), DuBois et al.
patent: D263849 (1982-04-01), Lawrence
patent: D264093 (1982-04-01), Lawrence
patent: D264220 (1982-05-01), DuBois
patent: 3807723 (1974-04-01), Thomas
DuBois R. Clark
Hamma John C.
Gradco Dendoki, Inc.
Holtje Nelson C.
Lee, Jr. Newton H.
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