Granted Patent
Utility
US 4,797,252 · App. 06/910,238
Corrosion-resistant, low-carbon plus nitrogen austenitic stainless steels with improved machinability
Inventors:
John J. Eckenrod, Geoffrey O. Rhodes, Kenneth E. Pinnow, William E. Royer
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Sep 19, 1986
Inventors
John J. Eckenrod
Geoffrey O. Rhodes
Kenneth E. Pinnow
William E. Royer
Assignee (at issue)
Crucible Materials 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.