Granted Patent
Utility
US 4,524,640 · App. 06/319,961
Integral holdout ring and spring retainer for differentials
Inventors:
Lawrence T. Neumann, Walter L. Dissett
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: Nov 10, 1981
Inventors
Lawrence T. Neumann
Walter L. Dissett
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.