Locked transmitter tag assembly and method of lockably attaching

Locked-in person saving apparatus

Locking cable for antitheft devices

Locking mechanism for use with one-time access code

Locking seal with tamper indication and notification device

Locking storage device and method of depositing and removing...

Locking system for a security container

Locking system for entry door to a security enclosure, able to c

Locomotive personal alert system

Logic circuit monitor

Logical pet immune intrusion detection apparatus and method

Long life detector

Long range intruder sensor

Long range RFID transponder

Long-range cattle identification system

Loss of neutral detecting circuit

Loss of potential determination for use in protective relays for

Loss prevention system

Lost and found system and method

Lost article detector unit with adaptive actuation signal recogn