Granted Patent
Utility
US 6,338,765 · App. 09/288,020
Ultrasonic impact methods for treatment of welded structures
Inventor:
Efim Statnikov
Patented Case
View Patent ↗
Granted: Jan 15, 2002
Filed: Apr 8, 1999
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.