Granted Patent
Utility
US 4,353,439 · App. 06/193,238
Drum brake with combined adjuster and wheel cylinder
Inventor:
Irving R. Ritsema
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: Oct 2, 1980
Inventor
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.