Granted Patent
Utility
US 5,775,901 · App. 08/612,516
Insert for ultrasonic scaler
Inventor:
Anthony T. Riso
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Mar 7, 1996
Inventor
Anthony T. Riso
Assignee (at issue)
HU-FRIEDY MFG. CO., LLC
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.