Granted Patent
Utility
US 4,631,028 · App. 06/420,276
Orthodontic tool
Inventor:
Craven H. Kurz
Patented Case
View Patent ↗
Granted: Dec 23, 1986
Filed: Sep 20, 1982
Inventor
Craven H. Kurz
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.