Granted Patent
Utility
US 4,330,241 · App. 06/075,106
Gear pump with pressure loaded bearing blocks and separate gear sealing plates
Inventor:
Roderick Howell Spurry
Patented Case
View Patent ↗
Granted: May 18, 1982
Filed: Sep 13, 1979
Inventor
Roderick Howell Spurry
Assignee (at issue)
Plessey Overseas Limited
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.