IP Library › Granted Patent US 4,428,661
Granted Patent Utility
US 4,428,661 · App. 06/348,259

Magnetic brush type developing device

Inventors: Keiji Masuda, Shinobu Fujiwara, Kenichi Matsumoto
Patented Case View Patent ↗
Granted: Jan 31, 1984 Filed: Feb 12, 1982
Inventors
Keiji Masuda
Shinobu Fujiwara
Kenichi Matsumoto
Assignee (at issue)
Konishiroku Photo Industry Co., Ltd.

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Quick Facts
Patent No.
US 4,428,661
App. No.
06/348,259
Filed
1982-02-12
Granted
1984-01-31
Kind
A