Granted Patent
Utility
US 4,760,593 · App. 06/920,240
Personal alarm system providing handsfree operation
Inventors:
L. Dennis Shapiro, Robert M. Armington, Theodore Bially, Philip H. Devlin
Patented Case
View Patent ↗
Granted: Jul 26, 1988
Filed: Oct 17, 1986
Inventors
L. Dennis Shapiro
Robert M. Armington
Theodore Bially
Philip H. Devlin
Assignee (at issue)
Lifeline Systems 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.