Granted Patent
Utility
US 4,981,459 · App. 07/358,705
Anti-lock ball spline assembly
Inventor:
Hubert E. Klinkenberg
Patented Case
View Patent ↗
Granted: Jan 1, 1991
Filed: May 30, 1989
Inventor
Hubert E. Klinkenberg
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.