Device and method for contactless transmission of power or data

Device configuration with RFID

Device for detecting a key inserted into a motor vehicle lock

Device location and identification system

Device simulator framework for an RFID infrastructure

Display apparatus for elevator car

Diver's piezoelectric microphone with integral AGC preamplifier

Down hole pressure/temperature gage connect/disconnect method an

Downhole seismic source

Drill string telemeter system

Dual electroacoustic transducers

Dual function logging tool and method

Dual mode transmitter-receiver and decoder for RF...

Dual mode transmitter-receiver and decoder for RF...

Dual mode transmitter-receiver and decoder for RF...

Dual mode transmitter-receiver and decoder for RF...

Dual mode transmitter/receiver and decoder for RF transponder ta

Dual mode transmitter/receiver and decoder for RF...

Dual track surface acoustic wave RFID/sensor

Duplex transmission in an electromagnetic transponder system