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经营范围
发明名称
Saw sharpener
摘要
申请公布号
US2607243(A)
申请公布日期
1952.08.19
申请号
US19490129459
申请日期
1949.11.25
申请人
JAMES MCEWAN
发明人
MCEWAN JAMES
分类号
B23D63/12
主分类号
B23D63/12
代理机构
代理人
主权项
地址
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