Granted Patent
Utility
US 4,220,097 · App. 05/905,499
Continuous cradle pad and skid for railway cars
Inventors:
Richard J. Wempe, Paul J. Dumser
Patented Case
View Patent ↗
Granted: Sep 2, 1980
Filed: May 12, 1978
Inventors
Richard J. Wempe
Paul J. Dumser
Assignee (at issue)
ACF 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.