Granted Patent
Utility
US 4,237,516 · App. 06/021,522
Protective electrical discharge device
Inventor:
Thomas V. Pierce
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Mar 19, 1979
Inventor
Thomas V. Pierce
Assignee (at issue)
American Standard 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.