Granted Patent
Utility
US 5,813,474 · App. 08/937,226
Plow blade
Inventor:
Terry A. Manway
Patented Case
View Patent ↗
Granted: Sep 29, 1998
Filed: Sep 11, 1997
Inventor
Terry A. Manway
Assignee (at issue)
KENNAMETAL 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.