Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1986-01-02
1988-09-20
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02977397
REFERENCES:
patent: D283330 (1986-04-01), Masaki
patent: D284386 (1986-06-01), Saito
patent: D285800 (1986-09-01), Kadota
patent: D286159 (1986-10-01), Masaki
patent: D286785 (1986-11-01), Okuyama
patent: D286885 (1986-11-01), Okuyama
patent: D287503 (1986-12-01), Masaki
Hashimoto Masanori
Imai Akira
Holtje Nelson C.
Ricoh & Company, Ltd.
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