Granted Patent
Utility
US 4,305,651 · App. 06/123,836
System for adjusting output current of discharge electrode for electrophotographic copying machines
Inventors:
Tadashi Umezawa, Seiichi Yagi, Katsuhiro Syukuri
Patented Case
View Patent ↗
Granted: Dec 15, 1981
Filed: Feb 22, 1980
Inventors
Tadashi Umezawa
Seiichi Yagi
Katsuhiro Syukuri
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.