Granted Patent
Utility
US 4,806,028 · App. 07/208,694
Bearing race keeper ring retention sleeve
Inventors:
Richard F. Miller, David Foster
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Jun 20, 1988
Inventors
Richard F. Miller
David Foster
Assignee (at issue)
General Motors LLC
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.