Granted Patent
Utility
US 6,527,039 · App. 09/878,716
Casting of engine blocks
Inventor:
Larry R. Shade
Patented Case
View Patent ↗
Granted: Mar 4, 2003
Filed: Jun 11, 2001
Inventor
Larry R. Shade
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.