Granted Patent
Utility
US 6,357,239 · App. 09/964,153
Oil return from chiller evaporator
Inventor:
Michael D. Carey
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Sep 25, 2001
Inventor
Michael D. Carey
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.