Granted Patent
Utility
US 5,263,530 · App. 07/758,908
Method of making a composite casting
Inventor:
Gregory N. Colvin
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Sep 11, 1991
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.