Granted Patent
Utility
US 4,745,251 · App. 07/060,617
Valve seat inductor
Inventor:
Robert V. Vickers
Patented Case
View Patent ↗
Granted: May 17, 1988
Filed: Jun 11, 1987
Inventor
Robert V. Vickers
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.