Granted Patent
Utility
US 5,961,301 · App. 08/904,143
Magnetic-drive assembly for a multistage centrifugal pump
Inventors:
Michael O. Wasserman, Manfred Klein
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: Jul 31, 1997
Inventors
Michael O. Wasserman
Manfred Klein
Assignee (at issue)
Ansimag Incorporated
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.