Granted Patent
Utility
US 4,537,304 · App. 06/458,205
Railway, coupler yoke, draft gear and follower assembly
Inventors:
John W. Kaim, Norman A. Berg, Russell G. Altherr
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Jan 17, 1983
Inventors
John W. Kaim
Norman A. Berg
Russell G. Altherr
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.