Granted Patent
Utility
US 4,861,549 · App. 07/157,657
Roller caster shell steel
Inventor:
Ashok E. Khare
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Feb 18, 1988
Inventor
Ashok E. Khare
Assignee (at issue)
National Forge Company
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.