Granted Patent
Utility
US 4,690,574 · App. 06/931,614
Bearing and method for rotatably supporting a worn shaft
Inventor:
Bernard S. Green
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Nov 17, 1986
Inventor
Bernard S. Green
Assignee (at issue)
Green Ball Bearing 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.