Granted Patent
Utility
US 4,557,158 · App. 06/496,095
Holdout ring construction for differentials
Inventors:
Walter L. Dissett, James R. Bawks
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: May 10, 1983
Inventors
Walter L. Dissett
James R. Bawks
Assignee (at issue)
Tractech 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.