Granted Patent
Utility
US 4,927,360 · App. 07/187,747
Triwing orthodontic bracket
Inventor:
Jirina V. Pospisil
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Apr 29, 1988
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.