Granted Patent
Utility
US 5,269,664 · App. 08/055,395
Magnetically coupled centrifugal pump
Inventor:
Frederic W. Buse
Patented Case
View Patent ↗
Granted: Dec 14, 1993
Filed: May 3, 1993
Inventor
Frederic W. Buse
Assignee (at issue)
Ingersoll-Dresser Pump Company
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.