Granted Patent
Utility
US 4,004,123 · App. 05/493,772
Method of and system for the controlling of an apparatus for the electric discharge machining of a workpiece
Inventor:
Kiyoshi Inoue
Patented Case
View Patent ↗
Granted: Jan 18, 1977
Filed: Aug 1, 1974
Inventor
Kiyoshi Inoue
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.