Granted Patent
Utility
US 6,166,639 · App. 09/267,241
Personal emergency response system
Inventors:
Douglas Pierce, Jeffrey S. Prough
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Mar 12, 1999
Inventors
Douglas Pierce
Jeffrey S. Prough
Assignee (at issue)
Advanced Marketing Systems, LLC
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.