Granted Patent
Utility
US 4,684,368 · App. 06/882,218
Inverted pump
Inventor:
Richard L. Kenyon
Patented Case
View Patent ↗
Granted: Aug 4, 1987
Filed: Jul 3, 1986
Inventor
Richard L. Kenyon
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.