Granted Patent
Utility
US 4,864,262 · App. 07/231,038
Undervoltage trip device
Inventor:
Anup K. Deb
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Aug 12, 1988
Inventor
Anup K. Deb
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.