Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-07-16
1984-02-28
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02728303
REFERENCES:
patent: D230085 (1974-01-01), Allis
patent: D234005 (1974-12-01), Yagi
patent: D263962 (1982-04-01), Kurozumi
patent: D267565 (1983-01-01), Fossella
patent: D277034 (1973-05-01), Derby
patent: 4203585 (1980-05-01), Kunz
patent: 4279504 (1981-07-01), Brown
patent: 4285512 (1981-08-01), Shlatz
patent: 4365889 (1982-12-01), Silverberg
Hara Kunio
Yasutani Shigeki
Holtje Nelson C.
Tokyo Shibaura Denki Kabushiki Kaisha
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