Granted Patent
Utility
US 4,744,836 · App. 07/006,142
Method for selectively heating a workpiece subjected to low temperature thermomechanical processing
Inventor:
George D. Pfaffmann
Patented Case
View Patent ↗
Granted: May 17, 1988
Filed: Jan 23, 1987
Inventor
George D. Pfaffmann
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.