Granted Patent
Utility
US 4,482,793 · App. 06/358,446
Apparatus for simultaneously heating a plurality of elongated workpieces
Inventor:
John C. Lewis, Jr.
Patented Case
View Patent ↗
Granted: Nov 13, 1984
Filed: Mar 15, 1982
Inventor
John C. Lewis, Jr.
Assignee (at issue)
Park-Ohio Industries
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.