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发明名称
Improvements in and relating to protective covers for books
摘要
申请公布号
GB441743(A)
申请公布日期
1936.01.24
申请号
GB19350011150
申请日期
1935.04.10
申请人
MARCEL MULLER
发明人
分类号
B42D3/04;B42D3/14
主分类号
B42D3/04
代理机构
代理人
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