SILENT CALL
devices to assist the hearing impaired and the deaf-blind, namely, radio transmitters, telephone transmitters, door bell transmitters, sound monitors, personal radio pagers, clip-on electric door bells, electric knock sensors, electric door/window access sensors, clock or alarm radio transmitters, fire alarm radio transmitters, systems comprising vibrating radio pagers, radio activated strobe lights, multiple radio activated alarms, pager request radio transmitters and receivers, radio receiv...
Registered · July 10, 1996 · 75138087 ·