Granted Patent
Utility
US 6,694,793 · App. 09/958,249
Process in joining
Inventor:
Jan Persson
Patented Case
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Granted: Feb 24, 2004
Filed: Jan 17, 2002
Inventor
Jan Persson
Assignee (at issue)
ABB AB
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.