Granted Patent
Utility
US 5,355,691 · App. 08/107,391
Control method and apparatus for a centrifugal chiller using a variable speed impeller motor drive
Inventors:
Brian T. Sullivan, Craig M. Goshaw, Paul C. Rentmeester
Patented Case
View Patent ↗
Granted: Oct 18, 1994
Filed: Aug 16, 1993
Inventors
Brian T. Sullivan
Craig M. Goshaw
Paul C. Rentmeester
Assignee (at issue)
American Standard 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.