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摘要
申请公布号
US2632449(A)
申请公布日期
1953.03.24
申请号
US19470793565
申请日期
1947.12.23
申请人
RONEO LIMITED
发明人
LOWINGS ERNEST FREDERICK
分类号
B42F15/00
主分类号
B42F15/00
代理机构
代理人
主权项
地址
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