Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-10-19
1983-10-11
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02709163
REFERENCES:
patent: D199211 (1964-09-01), Robinson
patent: D201158 (1965-05-01), Wessels
patent: D246372 (1977-11-01), Yoshino
patent: D258067 (1981-01-01), Bogart
patent: 3820148 (1974-06-01), Osanai
patent: 4037240 (1977-07-01), Ando
patent: 4294530 (1981-10-01), Iwashita
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