Granted Patent
Utility
US 5,598,420 · App. 08/577,063
Apparatus and method for generating a power signal for a power system from signals genenrated by a communication device
Inventor:
Barry M. Kaufman
Patented Case
View Patent ↗
Granted: Jan 28, 1997
Filed: Dec 22, 1995
Inventor
Barry M. Kaufman
Assignee (at issue)
ABB Power T&D Company 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.