Granted Patent
Utility
US 5,591,020 · App. 08/246,150
Pump oil mister
Inventor:
Robert E. Rockwood
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: May 19, 1994
Inventor
Robert E. Rockwood
Assignee (at issue)
Environamics Corporation
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.