Granted Patent
Utility
US 5,234,045 · App. 07/767,643
Method of squeeze-casting a complex metal matrix composite in a shell-mold cushioned by molten metal
Inventor:
Lawrence W. Cisko
Patented Case
View Patent ↗
Granted: Aug 10, 1993
Filed: Sep 30, 1991
Inventor
Lawrence W. Cisko
Assignee (at issue)
Aluminum Company of America
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.