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发明名称
Check protector for pens
摘要
申请公布号
US1829928(A)
申请公布日期
1931.11.03
申请号
US19280254193
申请日期
1928.02.14
申请人
HEINEMAN HERBERT S
发明人
HEINEMAN HERBERT S.
分类号
B43K29/18
主分类号
B43K29/18
代理机构
代理人
主权项
地址
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