Granted Patent
Utility
US 4,769,213 · App. 06/898,487
Age-hardenable stainless steel having improved machinability
Inventors:
Walter T. Haswell, Jr., Kenneth E. Pinnow, Geoffrey O. Rhodes, John J. Eckenrod
Patented Case
View Patent ↗
Granted: Sep 6, 1988
Filed: Aug 21, 1986
Inventors
Walter T. Haswell, Jr.
Kenneth E. Pinnow
Geoffrey O. Rhodes
John J. Eckenrod
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.