Granted Patent
Utility
US 4,311,350 · App. 06/184,037
Lubrication system for a thrust bearing
Inventor:
Allen W. Salzman
Patented Case
View Patent ↗
Granted: Jan 19, 1982
Filed: Sep 4, 1980
Inventor
Allen W. Salzman
Assignee (at issue)
Marchem Products 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.