Granted Patent
Utility
US 4,913,620 · App. 07/206,530
Centrifugal water pump
Inventors:
James L. Kusiak, John Seevers
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: Jun 14, 1988
Inventors
James L. Kusiak
John Seevers
Assignee (at issue)
Attwood 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.