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发明名称
Writing instrument
摘要
申请公布号
US3076437(A)
申请公布日期
1963.02.05
申请号
US19580751412
申请日期
1958.07.28
申请人
JOHNSON CLIFFORD N
发明人
JOHNSON CLIFFORD N.
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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