Granted Patent
Utility
US 5,156,689 · App. 07/703,311
Near net shape processing of zirconium or hafnium metals and alloys
Inventor:
Steven C. Evans
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: May 20, 1991
Inventor
Steven C. Evans
Assignee (at issue)
Westinghouse Electric Company LLC
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.