Granted Patent
Utility
US 5,162,776 · App. 07/727,569
Emergency service apparatus and method
Inventors:
Robert Bushnell, Stewart B. French, Charles B. Abbott
Patented Case
View Patent ↗
Granted: Nov 10, 1992
Filed: Jul 9, 1991
Inventors
Robert Bushnell
Stewart B. French
Charles B. Abbott
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.