Granted Patent
Utility
US 5,207,898 · App. 07/849,264
Filter head with integral priming pump and valved bypass passage
Inventor:
David H. Hodgkins
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Mar 11, 1992
Inventor
David H. Hodgkins
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.