Granted Patent
Utility
US 4,455,052 · App. 06/290,846
Tractor air brake system and control valve means therefor
Inventor:
Richard C. Bueler
Patented Case
View Patent ↗
Granted: Jun 19, 1984
Filed: Aug 7, 1981
Inventor
Richard C. Bueler
Assignee (at issue)
Echlin, 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.