Granted Patent
Utility
US 6,774,643 · App. 10/102,614
Non-bridged single electrode impedance measurement system for determining a condition of a dielectric according to impedance related changes over a range of frequencies
Inventor:
Richard Magill
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Mar 19, 2002
Inventor
Richard Magill
Assignee (at issue)
Signature Control Systems, Inc.
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.