Granted Patent
Utility
US 4,416,277 · App. 06/317,780
Return electrode monitoring system for use during electrosurgical activation
Inventors:
David Newton, Frederic M. Hulett, III, Christopher Ovens
Patented Case
View Patent ↗
Granted: Nov 22, 1983
Filed: Nov 3, 1981
Inventors
David Newton
Frederic M. Hulett, III
Christopher Ovens
Assignee (at issue)
Valleylab, 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.