Granted Patent
Utility
US 4,145,232 · App. 05/803,202
Process for carburizing steel
Inventor:
Jack Solomon
Patented Case
View Patent ↗
Granted: Mar 20, 1979
Filed: Jun 3, 1977
Inventor
Jack Solomon
Assignee (at issue)
Union Carbide 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.