r capturing and rerouting an individual local security systemUS73361686 Jun 200526 Feb 2008Lawrence KatesSystem and method for variable threshold sensorUS733946817 Oct 20054 Mar 2008Walter Kidde Portable Equipment, Inc.Radio frequency communications scheme in life safety devicesUS738551717 Oct 200510 Jun 2008Walter Kidde Portable Equipment, Inc.Gateway device to interconnect system including life