Granted Patent
Utility
US 5,222,498 · App. 07/924,159
Spiral electrode with contact retainer
Inventor:
Theodore C. Neward
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Aug 3, 1992
Inventor
Theodore C. Neward
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.