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经营范围
发明名称
A hydraulic driving device
摘要
申请公布号
GB709608(A)
申请公布日期
1954.05.26
申请号
GB19520016650
申请日期
1952.07.02
申请人
HERMANN V. RAUTENKRANZ;OTTO MEYER
发明人
分类号
E21B4/02
主分类号
E21B4/02
代理机构
代理人
主权项
地址
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