Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1980-07-18
1982-07-20
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02654814
REFERENCES:
patent: D152247 (1949-01-01), Flesh
patent: D155279 (1949-09-01), Flesch
patent: D257260 (1980-10-01), Shiraishi
patent: D257261 (1980-10-01), Shinohara
patent: D258661 (1981-03-01), Shiraishi
Holtje Nelson C.
Slik Tripod Co., Ltd.
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