Granted Patent
Utility
US 6,564,560 · App. 09/903,168
Oil-free liquid chiller
Inventors:
Arthur L. Butterworth, Todd R. Vandeleest, David H. Eber
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Jul 11, 2001
Inventors
Arthur L. Butterworth
Todd R. Vandeleest
David H. Eber
Assignee (at issue)
American Standard International 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.