Granted Patent
Utility
US 6,675,621 · App. 09/950,229
Plural sheet superplastic forming equipment and process
Inventor:
Richard M. Kleber
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Sep 10, 2001
Inventor
Richard M. Kleber
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.