Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1980-07-16
1982-04-13
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02638509
REFERENCES:
patent: D234005 (1974-12-01), Yagi
patent: D239659 (1976-04-01), Katayama
patent: D251912 (1979-05-01), Nakade
patent: D257984 (1981-01-01), Kurozumi
patent: 3834805 (1974-09-01), Pichierri
patent: 3951540 (1976-04-01), Ogawa
patent: 4247192 (1981-01-01), Komori
patent: 4268164 (1981-05-01), Yajima
DuBois R. Clark
Hamma John C.
Gradco Dendoki, Inc.
Holtje Nelson C.
Lee, Jr. Newton H.
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