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发明名称
Writing instrument
摘要
申请公布号
US3192904(A)
申请公布日期
1965.07.06
申请号
US19610151376
申请日期
1961.11.09
申请人
JOHMANN FRANK T
发明人
JOHMANN FRANK T.
分类号
B43K7/00
主分类号
B43K7/00
代理机构
代理人
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