Granted Patent
Utility
US 4,954,080 · App. 07/248,297
Ceramic orthodontic appliance
Inventors:
John S. Kelly, Henrick K. Gille
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Sep 21, 1988
Inventors
John S. Kelly
Henrick K. Gille
Assignees (at issue)
Unitek
Ceradyne, Inc.
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.