<p>Devices and methods for placing sensors underground are described. A preferred device has a first structure and a second structure that are placed into the ground. A third structure is connected to a portion of the first structure. The second structure is removed from the ground, leaving sensors or other equipment underground.</p>
申请公布号
WO2009012422(A2)
申请公布日期
2009.01.22
申请号
WO2008US70388
申请日期
2008.07.17
申请人
TERRALLIANCE TECHNOLOGIES, INC.;OLSON, ERLEND;HAMPSHIRE, JOHN B.;RIGAUD, RAYMOND