Granted Patent
Utility
US 6,356,624 · App. 09/128,579
Method and apparatus for detecting and measuring foreign voltages
Inventors:
Russell J. Apfel, Richard Bruce Webb, Walter S. Schopfer
Patented Case
View Patent ↗
Granted: Mar 12, 2002
Filed: Aug 4, 1998
Inventors
Russell J. Apfel
Richard Bruce Webb
Walter S. Schopfer
Assignee (at issue)
Leserity, 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.