Granted Patent
Utility
US 4,841,313 · App. 07/063,155
RF driver and control
Inventor:
Nathan K. Weiner
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Jun 16, 1987
Inventor
Nathan K. Weiner
Assignee (at issue)
Delphax Systems
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.