Granted Patent
Utility
US 5,221,015 · App. 07/827,149
Yoke for coupling railway cars utilizing a drawbar assembly
Inventors:
Peter S. Mautino, Douglas M. Hanes
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Jan 28, 1992
Inventors
Peter S. Mautino
Douglas M. Hanes
Assignee (at issue)
McConway & Torley, LLC
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.