Granted Patent
Utility
US 4,273,441 · App. 06/076,071
Electrophotographic copying apparatus
Inventor:
Mitsuru Nagoshi
Patented Case
View Patent ↗
Granted: Jun 16, 1981
Filed: Sep 17, 1979
Inventor
Mitsuru Nagoshi
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.