Granted Patent
Utility
US 4,364,482 · App. 06/166,012
Apparatus for cushioning shock forces acting on the underframe of a railway car
Inventor:
Walter C. Dilg
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: Jul 7, 1980
Inventor
Walter C. Dilg
Assignee (at issue)
Dresser Industries, Inc.
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.