Granted Patent
Utility
US 4,736,821 · App. 06/543,567
Fluid cooled friction brake
Inventor:
Donald L. Ries
Patented Case
View Patent ↗
Granted: Apr 12, 1988
Filed: Oct 19, 1983
Inventor
Donald L. Ries
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.