Granted Patent
Utility
US 4,996,796 · App. 07/134,116
Process and apparatus of abrading by extrusion
Inventor:
Lawrence J. Rhoades
Patented Case
View Patent ↗
Granted: Mar 5, 1991
Filed: Dec 17, 1987
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.