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发明名称
Sharpening device for the cutting rollers of pencil sharpeners
摘要
申请公布号
US2452827(A)
申请公布日期
1948.11.02
申请号
US19460687493
申请日期
1946.07.31
申请人
BEARDEN FRED E
发明人
BEARDEN FRED E.
分类号
B43L23/04
主分类号
B43L23/04
代理机构
代理人
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地址
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