Granted Patent
Utility
US 6,328,261 · App. 09/212,569
Friction welding metal components
Inventors:
Tim Wollaston, Richard Pedwell, Paul Bush
Patented Case
View Patent ↗
Granted: Dec 11, 2001
Filed: Dec 16, 1998
Inventors
Tim Wollaston
Richard Pedwell
Paul Bush
Assignee (at issue)
BAE SYSTEMS PLC
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.