Granted Patent
Utility
US 4,557,893 · App. 06/507,837
Process for producing composite material by milling the metal to 50% saturation hardness then co-milling with the hard phase
Inventors:
Arun D. Jatkar, Alfred J. Varall, Jr., Robert D. Schelleng
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Jun 24, 1983
Inventors
Arun D. Jatkar
Alfred J. Varall, Jr.
Robert D. Schelleng
Assignee (at issue)
INCO Selective Surfaces, Inc.
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.