Granted Patent
Utility
US 4,367,903 · App. 06/200,744
System for automatically delaying application of a snow brake for a railway vehicle
Inventor:
Robert J. Worbois
Patented Case
View Patent ↗
Granted: Jan 11, 1983
Filed: Oct 27, 1980
Inventor
Robert J. Worbois
Assignee (at issue)
American Standard 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.