Granted Patent
Utility
US 4,820,151 · App. 07/047,785
Orthodontic bracket
Inventor:
Jirina V. Pospisil
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: May 8, 1987
Inventor
Jirina V. Pospisil
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.