Granted Patent
Utility
US 4,052,202 · App. 05/616,647
Zirconium alloy additive and method for making zirconium additions to steels
Inventor:
Leon A. Luyckx
Patented Case
View Patent ↗
Granted: Oct 4, 1977
Filed: Sep 25, 1975
Inventor
Leon A. Luyckx
Assignee (at issue)
Reactive Metals & Alloys Corporation
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.