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发明名称
SPOON OF A DRIVING LOADER
摘要
申请公布号
PL155098(B1)
申请公布日期
1991.10.31
申请号
PL19870266292
申请日期
1987.06.16
申请人
发明人
分类号
E21D9/12;E02F3/34;E02F3/40;(IPC1-7):E21D9/12;E02F5/30
主分类号
E21D9/12
代理机构
代理人
主权项
地址
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