Granted Patent
Utility
US 5,670,833 · App. 08/344,286
Power transfer method and apparatus for uninterruptible power systems
Inventors:
Kevin R. Mengelt, Mark Schultz
Patented Case
View Patent ↗
Granted: Sep 23, 1997
Filed: Nov 23, 1994
Inventors
Kevin R. Mengelt
Mark Schultz
Assignee (at issue)
General Signal Power Systems, 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.