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发明名称
Pipe tongs
摘要
申请公布号
US2150611(A)
申请公布日期
1939.03.14
申请号
US19380185951
申请日期
1938.01.20
申请人
CARRIE SPECK;ELMER H. SPECK
发明人
SPECK GROVER LLOYD
分类号
E21B19/16
主分类号
E21B19/16
代理机构
代理人
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地址
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