Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1986-01-16
1988-11-01
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02983354
REFERENCES:
patent: D276916 (1984-12-01), Masaki
patent: D286297 (1986-10-01), Clowe
patent: D286541 (1986-11-01), Takahashi
patent: D287023 (1986-12-01), Masaki
patent: 3999514 (1976-12-01), Abbott
patent: 4432632 (1984-02-01), Yokota
patent: 4530588 (1985-07-01), Kimura
patent: 4657369 (1987-04-01), Takeuchi
Masaki Nobuo
Tashiro Naoki
Canon Kabushiki Kaisha
Holtje Nelson C.
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