Granted Patent
Utility
US 6,624,379 · App. 10/122,813
Method and apparatus for welding a metal fastener to a metal member
Inventors:
Robert T. Thornton, Jerry D. Ramsden, Joseph Nida, Jr., Pei-Chung Wang
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: Apr 15, 2002
Inventors
Robert T. Thornton
Jerry D. Ramsden
Joseph Nida, Jr.
Pei-Chung Wang
Assignee (at issue)
General Motors 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.