Granted Patent
Utility
US 4,830,148 · App. 07/077,570
Truss-type brake beam for railway vehicle truck-mounted brake assembly
Inventors:
James E. Hart, Earl E. Allan, Allen W. Kyllonen
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Jul 24, 1987
Inventors
James E. Hart
Earl E. Allan
Allen W. Kyllonen
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.