Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1980-05-28
1982-06-01
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02647273
REFERENCES:
patent: D234821 (1975-04-01), Sakamoto
patent: D235221 (1975-05-01), Cormier
patent: D245612 (1977-08-01), Zeuthen
patent: D246526 (1977-11-01), Kurozumi
patent: 3498708 (1970-03-01), Howard
Hara Kunio
Matsuzaka Yozo
Holtje Nelson C.
Tokyo Shibaura Denki Kabushiki Kaisha
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