Granted Patent
Utility
US 4,392,742 · App. 05/959,324
Liquid developer copier cleaning system incorporating resilient closed-cell cleaning roller
Inventor:
Benzion Landa
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Nov 9, 1978
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.