Granted Patent
Utility
US 4,640,290 · App. 06/727,058
Shielded, self-preparing electrode suitable for electroencephalographic mapping
Inventor:
Gary W. Sherwin
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Apr 25, 1985
Inventor
Gary W. Sherwin
Assignee (at issue)
Westinghouse Electric Company LLC
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.