Granted Patent
Utility
US 4,622,540 · App. 06/586,101
Security system status reporting
Inventors:
John K. Guscott, Mario D. Casamassima
Patented Case
View Patent ↗
Granted: Nov 11, 1986
Filed: Mar 5, 1984
Inventors
John K. Guscott
Mario D. Casamassima
Assignee (at issue)
American District Telegraph Company
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.