Granted Patent
Utility
US 4,777,477 · App. 07/042,835
Surveillance alarm-security system
Inventor:
Ronald Ross Watson
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Apr 27, 1987
Inventor
Ronald Ross Watson
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.