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发明名称
Tongs
摘要
申请公布号
US1924389(A)
申请公布日期
1933.08.29
申请号
US19300436695
申请日期
1930.03.18
申请人
BAASH LAWRENCE F;MAXWELL WILLIAM H
发明人
BAASH LAWRENCE F.;MAXWELL WILLIAM H.
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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