Granted Patent
Utility
US 4,729,754 · App. 06/918,967
Sealed bushing joint for chain
Inventor:
John H. Thuerman
Patented Case
View Patent ↗
Granted: Mar 8, 1988
Filed: Oct 15, 1986
Inventor
John H. Thuerman
Assignee (at issue)
REXNORD GMBH
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.