Granted Patent
Utility
US 6,672,120 · App. 10/368,247
In-die hydropiercing apparatus with prepiercing adjustment
Inventors:
Mircea M. Ghiran, Bruce S. Shimanovski, Glenn M. Krcek
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Feb 18, 2003
Inventors
Mircea M. Ghiran
Bruce S. Shimanovski
Glenn M. Krcek
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.