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经营范围
发明名称
Mechanical pencil
摘要
申请公布号
US2700959(A)
申请公布日期
1955.02.01
申请号
US19510258828
申请日期
1951.11.29
申请人
RODI & WIENENBERGER A.-G.
发明人
EINSELE ROBERT
分类号
B43K21/20
主分类号
B43K21/20
代理机构
代理人
主权项
地址
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