Granted Patent
Utility
US 6,411,207 · App. 09/411,607
Personal alert device
Inventor:
Karl Richard Shaffer
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Oct 1, 1999
Inventor
Karl Richard Shaffer
Assignee (at issue)
Avaya Technology 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.