Granted Patent
Utility
US 4,429,986 · App. 06/290,394
Control method of electrophotographic copying machine
Inventors:
Shunichi Abe, Mitsuo Akiyama
Patented Case
View Patent ↗
Granted: Feb 7, 1984
Filed: Aug 5, 1981
Inventors
Shunichi Abe
Mitsuo Akiyama
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.