Granted Patent
Utility
US 6,429,397 · App. 09/778,621
Programmable pogo welding apparatus and method
Inventors:
Peter Sun, Pei-Chung Wang, Charles W. Wampler, II, Douglas Martin Linn
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Feb 8, 2001
Inventors
Peter Sun
Pei-Chung Wang
Charles W. Wampler, II
Douglas Martin Linn
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.