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经营范围
发明名称
Line guide stabilizer
摘要
申请公布号
US2553912(A)
申请公布日期
1951.05.22
申请号
US19480059444
申请日期
1948.11.12
申请人
GERVAIS ARMAND C
发明人
GERVAIS ARMAND C.
分类号
E21B19/02
主分类号
E21B19/02
代理机构
代理人
主权项
地址
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