Granted Patent
Utility
US 4,751,985 · App. 06/907,354
Compact brake piston-return mechanism
Inventor:
Warren D. Chambers
Patented Case
View Patent ↗
Granted: Jun 21, 1988
Filed: Sep 15, 1986
Inventor
Warren D. Chambers
Assignee (at issue)
ALLIED CONSULTING, 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.