Granted Patent
Utility
US 4,203,221 · App. 05/947,214
Gas-driven handpiece having vibration isolating means
Inventors:
Arthur A. Knopp, John E. Nash, Richard P. Lewis
Patented Case
View Patent ↗
Granted: May 20, 1980
Filed: Sep 29, 1978
Inventors
Arthur A. Knopp
John E. Nash
Richard P. Lewis
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.