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发明名称
CORE DRILL
摘要
申请公布号
CA339580(A)
申请公布日期
1934.02.27
申请号
CAD339580
申请日期
申请人
CHARLES A. DEAN
发明人
CHARLES A. DEAN
分类号
主分类号
代理机构
代理人
主权项
地址
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