Granted Patent
Utility
US 5,911,948 · App. 08/906,236
Machinable lean beryllium-nickel alloys containing copper for golf clubs and the like
Inventor:
John O. Ratka
Patented Case
View Patent ↗
Granted: Jun 15, 1999
Filed: Aug 4, 1997
Inventor
John O. Ratka
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.