Granted Patent
Utility
US 5,332,022 · App. 07/942,020
Composite casting method
Inventor:
Gregory N. Colvin
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: Sep 8, 1992
Inventor
Gregory N. Colvin
Assignee (at issue)
HOWMET CORPORATION
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.