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发明名称
ROPE GUARD FOR A SAFETY GIN USED IN PARTICULAR ON COMBINED CUTTER LOADERS
摘要
申请公布号
PL113339(B2)
申请公布日期
1980.12.31
申请号
PL19780211380
申请日期
1978.11.29
申请人
发明人
分类号
E21C;E21C29/04;(IPC1-7):E21C29/04
主分类号
E21C
代理机构
代理人
主权项
地址
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