Granted Patent
Utility
US 6,764,286 · App. 10/054,311
Piston pump with pump inlet check valve
Inventors:
Harry A. Hunnicutt, Richard J. Barron, Peter Every
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Oct 29, 2001
Inventors
Harry A. Hunnicutt
Richard J. Barron
Peter Every
Assignee (at issue)
KELSEY-HAYES-COMPANY
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.