Granted Patent
Utility
US 5,232,042 · App. 07/836,661
Mold for casting metal ingot sows and method
Inventors:
Alvaro Giron, John E. Jacoby, Ho Yu
Patented Case
View Patent ↗
Granted: Aug 3, 1993
Filed: Feb 18, 1992
Inventors
Alvaro Giron
John E. Jacoby
Ho Yu
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.