Granted Patent
Utility
US 4,503,595 · App. 06/528,327
Method for forming a braking piston for a disc brake
Inventor:
David D. Sheill
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Aug 31, 1983
Inventor
David D. Sheill
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.