Granted Patent
Utility
US 6,161,529 · App. 09/329,773
Filter assembly with sump and check valve
Inventor:
Stephen Burgess
Patented Case
View Patent ↗
Granted: Dec 19, 2000
Filed: Jun 10, 1999
Inventor
Stephen Burgess
Assignee (at issue)
Parker-Hannifin Corporation
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.