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经营范围
发明名称
Pipe handling apparatus
摘要
申请公布号
US2425292(A)
申请公布日期
1947.08.12
申请号
US19450634242
申请日期
1945.12.11
申请人
MCCOY CARL J
发明人
MCCOY CARL J.
分类号
E21B19/15
主分类号
E21B19/15
代理机构
代理人
主权项
地址
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