Granted Patent
Utility
US 5,000,609 · App. 07/363,440
Retainer for universal joint bearing cups
Inventors:
Jeffrey A. Dutkiewicz, Daniel C. Perry
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Jun 7, 1989
Inventors
Jeffrey A. Dutkiewicz
Daniel C. Perry
Assignee (at issue)
DANA 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.