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发明名称
SUBWAY CAVERN ROAD STRUCTURE CAPABLE OF RECOGNIZING PASSING SPOT BY MEANS OF TRAVELING SOUND AND PASSING SPOT RECOGNIZING STRUCTURE BY THIS TRAVELING SOUND
摘要
申请公布号
JPH10329715(A)
申请公布日期
1998.12.15
申请号
JP19970140705
申请日期
1997.05.29
申请人
FUJITA CORP
发明人
IMAGAWA NOZOMI
分类号
E21D9/14;B61L3/02;(IPC1-7):B61L3/02
主分类号
E21D9/14
代理机构
代理人
主权项
地址
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