Granted Patent
Utility
US 6,531,688 · App. 10/136,949
Method of magnetic pulse welding an end fitting to a driveshaft tube of a vehicular driveshaft
Inventor:
Boris A. Yablochnikov
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Apr 30, 2002
Inventor
Boris A. Yablochnikov
Assignee (at issue)
Torque-Traction Technologies LLC
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.