Granted Patent
Utility
US 4,551,187 · App. 06/618,528
Copper alloy
Inventors:
Nathan Church, W. Raymond Cribb, John C. Harkness
Patented Case
View Patent ↗
Granted: Nov 5, 1985
Filed: Jun 8, 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.