Granted Patent
Utility
US 5,314,029 · App. 07/898,631
Pyramidal shaped, hardened insert for an agricultural tool
Inventor:
Don C. Rowlett
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: Jun 15, 1992
Inventor
Don C. Rowlett
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.