Granted Patent
Utility
US 4,785,147 · App. 07/106,537
System for hardening gears by induction heating
Inventors:
George M. Mucha, George D. Pfaffmann, Donald E. Novorsky
Patented Case
View Patent ↗
Granted: Nov 15, 1988
Filed: Oct 7, 1987
Inventors
George M. Mucha
George D. Pfaffmann
Donald E. Novorsky
Assignee (at issue)
Tocco, 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.