Granted Patent
Utility
US 4,913,562 · App. 07/294,208
Thermoplastic bearing liner
Inventor:
Robert A. Rosen
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: Jan 6, 1989
Inventor
Robert A. Rosen
Assignee (at issue)
THOMSON INDUSTRIES, INC.
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.