Granted Patent
Utility
US 4,744,759 · App. 06/862,706
Inserts for composite dental restorations
Inventor:
Rafael L. Bowen
Patented Case
View Patent ↗
Granted: May 17, 1988
Filed: May 13, 1986
Inventor
Rafael L. Bowen
Assignee (at issue)
American Dental Association Health Foundation
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.