Granted Patent
Utility
US 5,114,548 · App. 07/564,604
Orbital electrochemical machining
Inventor:
Lawrence J. Rhoades
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Aug 9, 1990
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.