Granted Patent
Utility
US 4,550,811 · App. 06/577,406
Manually releasable parking brake device
Inventor:
Steven C. Rumsey
Patented Case
View Patent ↗
Granted: Nov 5, 1985
Filed: Feb 6, 1984
Inventor
Steven C. Rumsey
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.