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发明名称
HAMMER SHOVEL
摘要
申请公布号
JPH11264290(A)
申请公布日期
1999.09.28
申请号
JP19980068459
申请日期
1998.03.18
申请人
OTA TOMIO
发明人
OTA TOMIO
分类号
E21B11/02;E21B1/00;E21B1/26;(IPC1-7):E21B11/02
主分类号
E21B11/02
代理机构
代理人
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地址
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