Granted Patent
Utility
US 4,400,040 · App. 06/321,386
Tapered roller bearing with improved lubricating means
Inventors:
David G. Toth, Robert S. Trump, Robert L. Leibensperger
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Nov 16, 1981
Inventors
David G. Toth
Robert S. Trump
Robert L. Leibensperger
Assignee (at issue)
THE TIMKEN 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.