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发明名称
A mechanical pencil and ball- point pen combined writing instrument
摘要
申请公布号
GB2153307(A)
申请公布日期
1985.08.21
申请号
GB19840002791
申请日期
1984.02.02
申请人
JEN * CHU KAO HSIAO
发明人
JEN * CHU KAO HSIAO
分类号
B43K24/02;B43K27/02;(IPC1-7):B43K27/02
主分类号
B43K24/02
代理机构
代理人
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