Granted Patent
Utility
US 5,667,600 · App. 08/221,395
Aluminum alloys containing beryllium and investment casting of such alloys
Inventors:
Fritz C. Grensing, James M. Marder, Jere H. Brophy
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Mar 31, 1994
Inventors
Fritz C. Grensing
James M. Marder
Jere H. Brophy
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.