Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1984-04-02
1986-12-02
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02870231
REFERENCES:
patent: D272251 (1984-01-01), Yoshihama
patent: D276916 (1984-12-01), Masaki
patent: 4218126 (1980-08-01), Takechi
patent: 4219272 (1980-08-01), Bruckel
patent: 4277162 (1981-07-01), Kasahara
patent: 4386838 (1983-06-01), Hirabayashi
patent: 4511237 (1985-04-01), Kawata
patent: 4523834 (1985-06-01), Pelda
patent: 4530588 (1985-07-01), Kimura
patent: 4540268 (1985-09-01), Yoyono
Canon Kabushiki Kaisha
Holtje Nelson C.
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