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发明名称
Razor blade sharpener
摘要
申请公布号
US2391701(A)
申请公布日期
1945.12.25
申请号
US19430506833
申请日期
1943.10.19
申请人
DAVID HELLER
发明人
HELLER DAVID
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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