Granted Patent
Utility
US 4,678,405 · App. 06/580,040
Low net positive suction head pumps
Inventor:
Harvey G. Allen
Patented Case
View Patent ↗
Granted: Jul 7, 1987
Filed: Feb 14, 1984
Inventor
Harvey G. Allen
Assignee (at issue)
Westinghouse Electric Company LLC
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.