Granted Patent
Utility
US 4,247,250 · App. 06/072,465
Fabricated pump casing
Inventors:
Bruce R. Lipe, Robert J. Meyer
Patented Case
View Patent ↗
Granted: Jan 27, 1981
Filed: Sep 4, 1979
Inventors
Bruce R. Lipe
Robert J. Meyer
Assignee (at issue)
Allis-Chalmers 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.