Granted Patent
Utility
US 5,748,427 · App. 08/770,629
Method and system for detecting relay failure
Inventors:
Daniel Yerkovich, Stephen T. Vincent
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Dec 19, 1996
Inventors
Daniel Yerkovich
Stephen T. Vincent
Assignee (at issue)
PHYSIO-CONTROL, 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.