Granted Patent
Utility
US 5,332,945 · App. 07/881,041
Pierce gun with grading electrode
Inventor:
Richard B. True
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: May 11, 1992
Inventor
Richard B. True
Assignee (at issue)
Litton Systems, 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.