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经营范围
发明名称
LOCKING MECHANISM OF HAMMER SHOVEL
摘要
申请公布号
JPH11200748(A)
申请公布日期
1999.07.27
申请号
JP19980006747
申请日期
1998.01.16
申请人
OTA TOMIO
发明人
OTA TOMIO
分类号
E21B1/00;(IPC1-7):E21B1/00
主分类号
E21B1/00
代理机构
代理人
主权项
地址
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