Granted Patent
Utility
US 5,865,021 · App. 08/917,307
Coated roller chain pin
Inventors:
Robert T. Duerigen, Andrew J. Binford
Patented Case
View Patent ↗
Granted: Feb 2, 1999
Filed: Aug 25, 1997
Inventors
Robert T. Duerigen
Andrew J. Binford
Assignee (at issue)
AMSTED INDUSTRIES 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.