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发明名称
Knife sharpener
摘要
申请公布号
US1749442(A)
申请公布日期
1930.03.04
申请号
US19260149912
申请日期
1926.11.22
申请人
GEORGE D. NORTON
发明人
PASS FRED
分类号
B24D15/08
主分类号
B24D15/08
代理机构
代理人
主权项
地址
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