Granted Patent
Utility
US 6,481,564 · App. 09/773,683
Conveyor side frame shaft opening reconditioning device and method
Inventor:
W. Scott Kalm
Patented Case
View Patent ↗
Granted: Nov 19, 2002
Filed: Jan 31, 2001
Inventor
W. Scott Kalm
Assignee (at issue)
Kalm-Forsythe Global Innovations, 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.