Granted Patent
Utility
US 4,658,819 · App. 06/531,758
Electrosurgical generator
Inventors:
Frank W. Harris, Frederick M. Hulett
Patented Case
View Patent ↗
Granted: Apr 21, 1987
Filed: Sep 13, 1983
Inventors
Frank W. Harris
Frederick M. Hulett
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.