Granted Patent
Utility
US 6,584,821 · App. 10/123,662
Self-aligning non-pinching hydroforming dies
Inventors:
Mircea M. Ghiran, Spyros P. Mellas, Paul C. Oberski
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Apr 16, 2002
Inventors
Mircea M. Ghiran
Spyros P. Mellas
Paul C. Oberski
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.