Granted Patent
Utility
US 5,070,968 · App. 07/408,857
Leading/trailing drum brake having servo parking brake
Inventor:
Anthony C. Evans
Patented Case
View Patent ↗
Granted: Dec 10, 1991
Filed: Sep 18, 1989
Inventor
Anthony C. Evans
Assignee (at issue)
KELSEY-HAYES-COMPANY
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.