Granted Patent
Utility
US 5,248,245 · App. 07/970,421
Magnetically coupled centrifugal pump with improved casting and lubrication
Inventors:
Paul Walter Behnke, Richard F. Gussert
Patented Case
View Patent ↗
Granted: Sep 28, 1993
Filed: Nov 2, 1992
Inventors
Paul Walter Behnke
Richard F. Gussert
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.