Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-03-02
1983-07-26
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02698803
REFERENCES:
patent: D257260 (1980-10-01), Shiraishi
patent: D258661 (1981-03-01), Shiraishi
patent: D262635 (1982-01-01), Iwasaki
patent: D263147 (1982-02-01), Iwasaki
patent: D264728 (1982-06-01), Iwasaka
patent: D265481 (1982-07-01), Iwasaki
patent: 2374021 (1945-04-01), Korling
Holtje Nelson C.
Slik Tripod Co., Ltd.
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