Granted Patent
Utility
US 4,347,589 · App. 06/235,180
Refresh counter test
Inventor:
Robert J. Proebsting
Patented Case
View Patent ↗
Granted: Aug 31, 1982
Filed: Feb 17, 1981
Inventor
Robert J. Proebsting
Assignee (at issue)
Mostek 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.