Granted Patent
Utility
US 4,836,760 · App. 07/025,232
Inlet for a positive displacement pump
Inventor:
Edward N. MacLeod
Patented Case
View Patent ↗
Granted: Jun 6, 1989
Filed: Mar 12, 1987
Inventor
Edward N. MacLeod
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.