Portable signal activator assembly

Portable smoke alarm

Portable surgical early warning device

Portable system and method for continuously monitoring protectiv

Portable telephone set with crime prevention function

Portable theft alarm

Portable thermo-anemometer with bimetallic sensor

Portable tracking alarm apparatus

Portable tracking apparatus for continuous position determinatio

Portable unit with smoke alarm, clock radio, compass, retractabl

Portable vital signs monitor

Portable warning device

Portable water activated alert system with directional indicator

Portable window wedge with alarm

Portable wire loop anti theft alarm with magnetic unlocking

Portable wireless cellular fire alarm system apparatus and...

Portable, batteryless, frequency divider consisting of inductor

Portable, disposable warning device for detecting urine-wet unde

Portal announcing method and system

Portal announcing method and system