Granted Patent
Utility
US 4,253,832 · App. 05/953,473
Dental handpiece
Inventor:
Ronald L. Bailey
Patented Case
View Patent ↗
Granted: Mar 3, 1981
Filed: Oct 23, 1978
Inventor
Ronald L. Bailey
Assignee (at issue)
Young Dental Manufacturing Company 1, 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.