Granted Patent
Utility
US 4,565,586 · App. 06/623,463
Processing of copper alloys
Inventors:
Nathan Church, W. Raymond Cribb, John C. Harkness
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Jun 22, 1984
Inventors
Nathan Church
W. Raymond Cribb
John C. Harkness
Assignee (at issue)
BRUSH WELLMAN, 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.