Granted Patent
Utility
US 6,470,846 · App. 09/714,498
Broach tool and method of repair
Inventors:
James A. Kammeraad, Thomas Knowles, Dwain L. Kamphuis
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Nov 15, 2000
Inventors
James A. Kammeraad
Thomas Knowles
Dwain L. Kamphuis
Assignee (at issue)
K-LINE INDUSTRIES, 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.