Granted Patent
Utility
US 5,138,322 · App. 07/747,380
Method and apparatus for radar measurement of ball in play
Inventor:
Jerry A. Nuttall
Patented Case
View Patent ↗
Granted: Aug 11, 1992
Filed: Aug 20, 1991
Inventor
Jerry A. Nuttall
Assignee (at issue)
MATRIX ENGINEERING LIMITED
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.