Granted Patent
Utility
US 4,927,362 · App. 07/218,095
Convertible buccal tube
Inventor:
Wilford A. Snead
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Jul 12, 1988
Inventor
Wilford A. Snead
Assignee (at issue)
Unitek
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.