Granted Patent
Utility
US 4,525,634 · App. 06/493,225
Alternating current switching device
Inventor:
James S. Southard
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: May 10, 1983
Inventor
James S. Southard
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.