Granted Patent
Utility
US 4,859,989 · App. 07/126,670
Security system and signal carrying member thereof
Inventor:
Hugh McPherson
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Dec 1, 1987
Inventor
Hugh McPherson
Assignee (at issue)
W. L. Gore & Associates, 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.