Granted Patent
Utility
US 6,379,254 · App. 09/346,366
End fitting adapted to be secured to driveshaft tube by electromagnetic pulse welding
Inventor:
Boris A. Yablochnikov
Patented Case
View Patent ↗
Granted: Apr 30, 2002
Filed: Jul 1, 1999
Inventor
Boris A. Yablochnikov
Assignee (at issue)
Spicer Driveshaft, Inc.
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.