Granted Patent
Utility
US 4,667,183 · App. 06/774,489
Keyboard hold-down functions for a multi-zone intrusion detection system
Inventor:
Raymond Gaudio
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: Sep 9, 1985
Inventor
Raymond Gaudio
Assignee (at issue)
NAPCO Security 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.