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发明名称
DETECTOR FOR GROUND CHANGING STATE WITH AE SENSOR AND DETECTING METHOD
摘要
申请公布号
JPH03202504(A)
申请公布日期
1991.09.04
申请号
JP19890341650
申请日期
1989.12.29
申请人
TAKENAKA KOMUTEN CO LTD;TAKENAKA DOBOKU CO LTD
发明人
UEDA TAKAO;KAKIZAWA TADAHIRO;IKEGAWA TETSUYA
分类号
E02D1/00
主分类号
E02D1/00
代理机构
代理人
主权项
地址
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