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发明名称
Wrench
摘要
申请公布号
US2370837(A)
申请公布日期
1945.03.06
申请号
US19420463400
申请日期
1942.10.26
申请人
MARTIN SIDA S
发明人
MARTIN SIDA S.
分类号
E21B19/16
主分类号
E21B19/16
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