Granted Patent
Utility
US 4,482,860 · App. 06/486,807
Capacitance measurement probe
Inventor:
Donald Risko
Patented Case
View Patent ↗
Granted: Nov 13, 1984
Filed: Apr 19, 1983
Inventor
Donald Risko
Assignee (at issue)
Extrude Hone GmbH
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.