Granted Patent
Utility
US 4,195,213 · App. 05/883,648
Feeding mechanism for induction heating coil
Inventor:
Joseph W. Chiboroski
Patented Case
View Patent ↗
Granted: Mar 25, 1980
Filed: Mar 6, 1978
Inventor
Joseph W. Chiboroski
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.