Granted Patent
Utility
US 4,344,512 · App. 06/122,942
Duo servo drum brake and parking mechanism therefor
Inventor:
Ji Y. Woo
Patented Case
View Patent ↗
Granted: Aug 17, 1982
Filed: Feb 20, 1980
Inventor
Ji Y. Woo
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.