Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1984-07-02
1986-10-14
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02861593
REFERENCES:
patent: D245612 (1977-08-01), Zeuthen
patent: D246526 (1977-11-01), Kurozumi
patent: D270452 (1983-09-01), Sakurai
patent: D278152 (1985-03-01), Hara
patent: D278246 (1985-04-01), Masaki
patent: D280205 (1985-08-01), Okuyama
patent: D280631 (1985-09-01), Nakade
patent: D280632 (1985-09-01), Nakade
patent: D280633 (1985-09-01), Saito
Canon Kabushiki Kaisha
Holtje Nelson C.
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