Granted Patent
Utility
US 4,754,115 · App. 06/838,723
High speed electrical discharge machining by redressing high resolution graphite electrodes
Inventor:
Lawrence J. Rhoades
Patented Case
View Patent ↗
Granted: Jun 28, 1988
Filed: Mar 11, 1986
Inventor
Lawrence J. Rhoades
Assignee (at issue)
Extrude Hone GmbH
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.