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发明名称
Tool joint
摘要
申请公布号
US2552147(A)
申请公布日期
1951.05.08
申请号
US19480038220
申请日期
1948.07.12
申请人
VERA E. BROWNING;JUNIOR W. TSCHACHE;OTTLEY R. TSCHACHE
发明人
BROWNING ROE V.
分类号
B25B13/06;B25B23/00;B25G1/06
主分类号
B25B13/06
代理机构
代理人
主权项
地址
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