Granted Patent
Utility
US 4,256,820 · App. 06/097,512
Method of electrophotography using low intensity exposive
Inventor:
Benzion Landa
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Nov 26, 1979
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.