Granted Patent
Utility
US 4,873,889 · App. 06/804,231
Tie bar with internal lubrication
Inventor:
Richard J. Ditlinger
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Dec 3, 1985
Inventor
Richard J. Ditlinger
Assignee (at issue)
AlliedSignal, 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.