Granted Patent
Utility
US 5,390,723 · App. 08/137,894
Method of treating casting metals
Inventors:
Prem P. Mohla, Eli DAVID
Patented Case
View Patent ↗
Granted: Feb 21, 1995
Filed: Oct 18, 1993
Inventors
Prem P. Mohla
Eli DAVID
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.