Granted Patent
Utility
US 5,728,239 · App. 08/470,760
Process for hardening aluminum using a magnesium alloy
Inventors:
William C. Setzer, Richard J. Malliris, David K. Young, Francis P. Koch
Patented Case
View Patent ↗
Granted: Mar 17, 1998
Filed: Jun 6, 1995
Inventors
William C. Setzer
Richard J. Malliris
David K. Young
Francis P. Koch
Assignee (at issue)
KB Alloys
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.