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经营范围
发明名称
EXTENSIBLE TWO-PART SKEW BRIDGE
摘要
申请公布号
PL132830(B1)
申请公布日期
1985.04.30
申请号
PL19810233317
申请日期
1981.10.05
申请人
发明人
分类号
E02F;E02F5/26;E02F7/00;E21C;(IPC1-7):E02F5/26
主分类号
E02F
代理机构
代理人
主权项
地址
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