Granted Patent
Utility
US 4,657,601 · App. 06/763,709
Thermomechanical processing of beryllium-copper alloys
Inventor:
Amitava Guha
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Aug 8, 1985
Inventor
Amitava Guha
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.