Granted Patent
Utility
US 4,563,238 · App. 06/647,533
Chemical deburring system with a soluble mask
Inventor:
Lawrence J. Rhoades
Patented Case
View Patent ↗
Granted: Jan 7, 1986
Filed: Sep 5, 1984
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.