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发明名称
Paper file
摘要
申请公布号
US1824791(A)
申请公布日期
1931.09.29
申请号
US19290416091
申请日期
1929.12.23
申请人
GRUNEWALDS REGISTRATOR CO. AKT. GES.
发明人
RENGMANN THURE
分类号
B42F13/28
主分类号
B42F13/28
代理机构
代理人
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地址
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