Battery door for a selective call receiver
Battery operated access control card
Battery rental system and apparatus
Battery retainer with integral mechanical shock isolation
Battery saving apparatus and method providing optimum synchroniz
Battery saving arrangement for selectively addressable, portable
Battery saving method for a selective call radio paging receiver
Battery saving method for portable communications receivers
Battery saving method for selective call receivers
Battery-powered, RF-interconnected detector sensor system
Battery-saving arrangement for pagers
Bearing with an arrangement for obtaining an indication of the t
Bearing with an electric-acoustic transducer for transmitting in
Bearing with an electric-acoustic transducer for transmitting in
Belted electronic display clinical thermometer with alarm
Beverage communication system
Beverage holder with remote control
Bi-directional data telemetry system
Bi-directional drive multiplexed display system
Bi-directional protocol