Granted Patent
Utility
US 4,469,015 · App. 06/457,825
Emergency and service brake actuator
Inventor:
James R. Clark
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Jan 13, 1983
Inventor
James R. Clark
Assignee (at issue)
Rockwell International Corporation
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.