Granted Patent
Utility
US 4,386,682 · App. 06/252,631
Piston retraction and wear compensation for low-drag disc brakes
Inventors:
Ji Y. Woo, Irving R. Ritsema
Patented Case
View Patent ↗
Granted: Jun 7, 1983
Filed: Apr 9, 1981
Inventors
Ji Y. Woo
Irving R. Ritsema
Assignee (at issue)
Bendix Limited
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.