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经营范围
发明名称
PIPE HANDLING APPARATUS
摘要
申请公布号
GB8612383(D0)
申请公布日期
1986.06.25
申请号
GB19860012383
申请日期
1986.05.21
申请人
ADVOTEC INC
发明人
分类号
E21B19/20;(IPC1-7):E21B19/18
主分类号
E21B19/20
代理机构
代理人
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地址
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