<p>An identification device comprising an ultrasound transmitter unit (16) and an outer housing (6) which receives said transmitter unit (16), said outer housing (6) comprising one or more apertures (32) which are sealed by a membrane, said membrane being substantially transparent to ultrasound when compared to the rest of the housing.</p>
申请公布号
WO2009056823(A3)
申请公布日期
2009.06.25
申请号
WO2008GB03658
申请日期
2008.10.28
申请人
SONITOR TECHNOLOGIES AS;SAMUELS, ADRIAN, JAMES;BOOIJ, WILFRED, EDWIN;OEYEN, ARNE
