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经营范围
发明名称
Knife sharpener
摘要
申请公布号
US2691252(A)
申请公布日期
1954.10.12
申请号
US19510228610
申请日期
1951.05.28
申请人
PUNTON GEORGE C
发明人
PUNTON GEORGE C.
分类号
B24B3/54
主分类号
B24B3/54
代理机构
代理人
主权项
地址
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