Granted Patent
Utility
US 4,174,031 · App. 05/890,737
Lubricating system and method
Inventor:
Donald MacLeod
Patented Case
View Patent ↗
Granted: Nov 13, 1979
Filed: Mar 27, 1978
Inventor
Donald MacLeod
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.