Granted Patent
Utility
US 6,667,688 · App. 09/219,737
Detection system using personal communication device with response
Inventors:
Raymond Menard, Curtis E. Quady
Patented Case
View Patent ↗
Granted: Dec 23, 2003
Filed: Dec 22, 1998
Inventors
Raymond Menard
Curtis E. Quady
Assignee (at issue)
Royal Thoughts, 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.