Granted Patent
Utility
US 4,527,977 · App. 06/234,283
Gas-driven dental scaler having torque reaction means
Inventor:
John E. Nash
Patented Case
View Patent ↗
Granted: Jul 9, 1985
Filed: Feb 13, 1981
Inventor
John E. Nash
Assignee (at issue)
Syntex (U.S.A.) 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.