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专利名称：DATA TRANSMISSION DEVICE发明人：LE BRIERE, BRUNO,CHATELET,
VINCENT,MILLET, FRANCOIS, GUY
申请号：EP037526.5申请日：20031128公开号：EP1570157A1公开日：20050907
摘要：The device has a cavity (13) defined under-ground starting from a surface of asoil (17). The cavity is equipped with a tubular unit (21,25), which conducts electricity. Acable (3) is deposited in the unit between a point at the surface and another point withinthe cavity for transmitting electrical signals between the points. The cable has a part ofloop for conducting the signals between a transmitting (9) and receiving unit (11).
申请人：GEOSERVICES SA
地址：Z.I. du Coudray, 7, rue Isaac Newton 93151 Le Blanc-Mesnil FR
国籍：FR
代理机构：Domenego, Bertrand
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