Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1983-10-04
1985-10-29
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D16 27
Patent
active
D02811707
REFERENCES:
patent: D197996 (1964-04-01), Abend
patent: D234005 (1974-12-01), Yagi
patent: D276238 (1984-11-01), Kosako
patent: 4203585 (1980-05-01), Kunz
patent: 4270746 (1981-06-01), Hamlin
patent: 4279504 (1981-07-01), Brown
patent: 4460269 (1984-07-01), Yamazaki
Hara Kunio
Okuyama Tooru
Holtje Nelson C.
Tokyo Shibaura Denki Kabushiki Kaisha
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