Granted Patent
Utility
US 5,251,121 · App. 07/599,888
Power supplies
Inventors:
Daniel W. Knodle, Walter A. Cooke, Paul K. Graham
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Oct 18, 1990
Inventors
Daniel W. Knodle
Walter A. Cooke
Paul K. Graham
Assignee (at issue)
NTC Technology, 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.