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经营范围
发明名称
HYDRAULICALLY OPERATED BIT DRIVE
摘要
申请公布号
CA609901(A)
申请公布日期
1960.12.06
申请号
CAD609901
申请日期
申请人
GODFREY L. CABOT
发明人
EDWARD W. SMITH
分类号
主分类号
代理机构
代理人
主权项
地址
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