Granted Patent
Utility
US 4,400,079 · App. 06/190,369
Injection roller developer for electrophotographic copier and biasing system therefor
Inventor:
Benzion Landa
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Sep 24, 1980
Inventor
Benzion Landa
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.