Granted Patent
Utility
US 4,443,254 · App. 06/202,674
Cobalt free maraging steel
Inventor:
Stephen Floreen
Patented Case
View Patent ↗
Granted: Apr 17, 1984
Filed: Oct 31, 1980
Inventor
Stephen Floreen
Assignee (at issue)
Inco Research & Development Center, Inc.
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.