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经营范围
发明名称
Vertical foundation boring machine
摘要
申请公布号
US1883013(A)
申请公布日期
1932.10.18
申请号
US19280296355
申请日期
1928.07.30
申请人
EDWARD SHINN
发明人
SHINN EDWARD
分类号
E21B7/00
主分类号
E21B7/00
代理机构
代理人
主权项
地址
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