Granted Patent
Utility
US 4,696,646 · App. 06/812,350
Dental wedge and method of using same
Inventor:
Ronald I. Maitland
Patented Case
View Patent ↗
Granted: Sep 29, 1987
Filed: Dec 23, 1985
Inventor
Ronald I. Maitland
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.