Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1983-09-26
1986-06-24
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02843862
REFERENCES:
patent: D245612 (1977-08-01), Zeuthen
patent: D246526 (1977-11-01), Kurozumi
patent: D264345 (1982-05-01), Masaki
patent: D264727 (1982-06-01), Matsuzaka
patent: D265656 (1982-08-01), Matsushima
patent: D270164 (1983-08-01), Sawada
patent: D270452 (1983-09-01), Sakurai
patent: D278152 (1985-03-01), Hara
Ricoh FT 4700 (Flyer)--1/81--Copier at top-right--back side.
Holtje Nelson C.
Ricoh & Company, Ltd.
Shoup Guy W.
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