Granted Patent
Utility
US 6,059,898 · App. 09/071,259
Induction hardening of heat treated gear teeth
Inventors:
James Steven Fisher, Roland C. Smith
Patented Case
View Patent ↗
Granted: May 9, 2000
Filed: May 1, 1998
Inventors
James Steven Fisher
Roland C. Smith
Assignee (at issue)
DANA LIMITED
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.