Granted Patent
Utility
US 5,908,402 · App. 08/792,054
Method and apparatus for detecting tube occlusion in argon electrosurgery system
Inventor:
Robert Lewis Blythe
Patented Case
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Granted: Jun 1, 1999
Filed: Feb 3, 1997
Inventor
Robert Lewis Blythe
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.