Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1983-04-19
1985-09-17
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02806290
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patent: D218855 (1970-09-01), Noyes
patent: D227600 (1973-07-01), Noyes
patent: D228956 (1973-10-01), Sakuma
patent: D243008 (1977-01-01), Patla
patent: D255583 (1980-06-01), Goto
patent: D263844 (1982-04-01), Sakurai
patent: D270539 (1983-09-01), Horie
patent: 3815990 (1974-06-01), Newcomb
patent: 4098551 (1978-07-01), Komori
patent: 4334764 (1982-06-01), Rawson
Goto Tetsuya
Saito Yasuhiro
Umino Toshio
Holtje Nelson C.
Ricoh & Company, Ltd.
Shoup Guy W.
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