Granted Patent
Utility
US 4,771,868 · App. 06/939,993
Handbrake mechanism for single-cylinder, truck-mounted railway car brake assembly
Inventor:
Andrew G. Haydu
Patented Case
View Patent ↗
Granted: Sep 20, 1988
Filed: Dec 10, 1986
Inventor
Andrew G. Haydu
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.