Granted Patent
Utility
US 4,635,804 · App. 06/720,690
Yoke for railway car coupler assembly
Inventor:
Richard M. Hanula
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Apr 8, 1985
Inventor
Richard M. Hanula
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.