Granted Patent
Utility
US 5,927,860 · App. 08/961,865
Buttons for product lubricated thrust bearings
Inventor:
Frederic W. Buse
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Oct 31, 1997
Inventor
Frederic W. Buse
Assignee (at issue)
Ingersoll-Dresser Pump 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.