Granted Patent
Utility
US 6,722,175 · App. 10/222,858
Ultrasonic machining and reconfiguration of braking surfaces
Inventor:
Efim Statnikov
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Aug 19, 2002
Inventor
Efim Statnikov
Assignee (at issue)
U.I.T., L.L.C.
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.