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发明名称
Pipe tongs
摘要
申请公布号
US3097552(A)
申请公布日期
1963.07.16
申请号
US19610141521
申请日期
1961.09.28
申请人
KELLEY BENJAMIN F
发明人
KELLEY BENJAMIN F.
分类号
E21B19/16
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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