Granted Patent
Utility
US 5,189,791 · App. 07/711,502
Method for making a retainer having enhanced roller retention
Inventor:
Richard L. Alling
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: Jun 3, 1991
Inventor
Richard L. Alling
Assignee (at issue)
The Torrington Company
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.