Granted Patent
Utility
US 4,678,317 · App. 06/794,765
Charge and bias control system for electrophotographic copier
Inventor:
Israel Grossinger
Patented Case
View Patent ↗
Granted: Jul 7, 1987
Filed: Nov 4, 1985
Inventor
Israel Grossinger
Assignee (at issue)
Savin Corporation
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.