Granted Patent
Utility
US 4,989,155 · App. 07/337,080
Intelligent power monitor
Inventors:
John D. Begin, James E. Berry, Paul D. Kretzmer
Patented Case
View Patent ↗
Granted: Jan 29, 1991
Filed: Apr 12, 1989
Inventors
John D. Begin
James E. Berry
Paul D. Kretzmer
Assignee (at issue)
GTE Valenite Corporation
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.