Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1982-02-22
1984-09-25
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02756820
REFERENCES:
patent: D249949 (1978-10-01), Mielke
patent: D263961 (1982-04-01), Lange
patent: 3057278 (1962-10-01), Zill
patent: 3418909 (1968-12-01), Rabinow
patent: 3768387 (1973-10-01), Hasegawa
patent: 4420240 (1983-12-01), Katsuma
Eslinger Lewis H.
Holtje Nelson C.
Sinderbrand Alvin
Sony Corporation
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