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发明名称
Gripping dies for pipe tongs and the like
摘要
申请公布号
US2720128(A)
申请公布日期
1955.10.11
申请号
US19530357162
申请日期
1953.05.25
申请人
WOOLLEY NED S
发明人
WOOLLEY NED S.
分类号
B25B7/02;B25B13/50;E21B19/16
主分类号
B25B7/02
代理机构
代理人
主权项
地址
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