Granted Patent
Utility
US 5,927,521 · App. 08/942,468
Lightweight and topless draft arm
Inventors:
John R. Downes, Kenneth W. Trainer
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Oct 2, 1997
Inventors
John R. Downes
Kenneth W. Trainer
Assignee (at issue)
Buckeye Steel Castings 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.