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发明名称
ABRASIVE TOOLS
摘要
申请公布号
CA487702(A)
申请公布日期
1952.11.04
申请号
CAD487702
申请日期
申请人
GEORGE DAVIES
发明人
GEORGE DAVIES
分类号
主分类号
代理机构
代理人
主权项
地址
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