Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1982-04-30
1984-10-16
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02759608
REFERENCES:
patent: D248957 (1978-08-01), Kitai
patent: D260902 (1981-09-01), Kurozumi
patent: D262118 (1981-12-01), Sinn
patent: D264345 (1982-05-01), Masaki
patent: D264725 (1982-06-01), Tokuda
patent: D266254 (1982-09-01), Horikoshi
patent: D270164 (1983-08-01), Sawada
patent: D270541 (1983-09-01), Matsuzaka
Matsuzaka Yohzoh
Yasutani Shigeki
Holtje Nelson C.
Tokyo Shibaura Denki Kabushiki Kaisha
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