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发明名称
Weight indicator
摘要
申请公布号
US2324174(A)
申请公布日期
1943.07.13
申请号
US19400333079
申请日期
1940.05.03
申请人
TWO STATES DRILLING COMPANY
发明人
RODGERS ARTHUR L.
分类号
G01G19/14
主分类号
G01G19/14
代理机构
代理人
主权项
地址
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