Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1980-04-17
1982-12-14
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02672529
REFERENCES:
patent: D241273 (1976-08-01), Okuno
patent: D250475 (1978-12-01), Kando
patent: D250766 (1979-01-01), Ozawa
patent: 3882514 (1975-05-01), Graham
patent: 4066885 (1978-01-01), Weinberg
patent: 4238150 (1980-12-01), Quinn
Holtje Nelson C.
Rollei of America, Inc.
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