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发明名称
Pencil sharpener
摘要
申请公布号
US2572875(A)
申请公布日期
1951.10.30
申请号
US19490077562
申请日期
1949.02.21
申请人
SPENGLER-LOOMIS MANUFACTURING COMPANY
发明人
MARKVART EDWIN J.;SOLEM ANDREW P.
分类号
B43L23/04
主分类号
B43L23/04
代理机构
代理人
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