Granted Patent
Utility
US 4,886,498 · App. 07/109,755
Mechanism for coupling the aspirant line of an irrigation/aspiration machine to the pressure monitoring section
Inventor:
Walter A. Newton
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Oct 19, 1987
Inventor
Walter A. Newton
Assignee (at issue)
Entravision, 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.