Granted Patent
Utility
US 6,135,741 · App. 09/354,259
Recirculating flow path for gear pump
Inventor:
Robert E. Oehman, Jr.
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Jul 15, 1999
Inventor
Robert E. Oehman, Jr.
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.