Granted Patent
Utility
US 4,486,089 · App. 06/401,859
Magnetic brush developing means
Inventors:
Masahiko Itaya, Satoshi Haneda, Yukio Okamoto
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Jul 26, 1982
Inventors
Masahiko Itaya
Satoshi Haneda
Yukio Okamoto
Assignee (at issue)
Konishiroku Photo Industry Co., Ltd.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.