Granted Patent
Utility
US 5,574,668 · App. 08/394,642
Apparatus and method for measuring ball grid arrays
Inventor:
Elwin M. Beaty
Patented Case
View Patent ↗
Granted: Nov 12, 1996
Filed: Feb 22, 1995
Inventor
Elwin M. Beaty
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.