Granted Patent
Utility
US 6,484,403 · App. 09/672,427
Method of converting a traction motor with sleeve bearings to roller bearings
Inventors:
John E. Macklin, Paul Bien, Roger M. Boor
Patented Case
View Patent ↗
Granted: Nov 26, 2002
Filed: Sep 28, 2000
Inventors
John E. Macklin
Paul Bien
Roger M. Boor
Assignee (at issue)
Magnus/Farley, Inc.
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.