Granted Patent
Utility
US 5,245,694 · App. 07/693,958
User-programmable voice notification device for security alarm systems
Inventor:
Arthur L. Zwern
Patented Case
View Patent ↗
Granted: Sep 14, 1993
Filed: Apr 29, 1991
Inventor
Arthur L. Zwern
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.