Granted Patent
Utility
US 6,250,102 · App. 09/570,303
Oil and refrigerant pump for centrifugal chiller
Inventor:
James C. Tischer
Patented Case
View Patent ↗
Granted: Jun 26, 2001
Filed: May 12, 2000
Inventor
James C. Tischer
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.