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发明名称
EARTH DROPPING DEVICE TO WATER BOTTOM
摘要
申请公布号
JPH03247814(A)
申请公布日期
1991.11.06
申请号
JP19900044617
申请日期
1990.02.27
申请人
TOA HARBOR WORKS CO LTD
发明人
NISHIKAWA YUTAKA
分类号
E02B15/00;E02D15/10
主分类号
E02B15/00
代理机构
代理人
主权项
地址
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