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经营范围
发明名称
Propelling pencil having an eraser adjustable therein by a screw action
摘要
申请公布号
US3072101(A)
申请公布日期
1963.01.08
申请号
US19600000563
申请日期
1960.01.05
申请人
THEODOR KOVACS
发明人
KOVACS THEODOR
分类号
B43K29/02
主分类号
B43K29/02
代理机构
代理人
主权项
地址
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