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发明名称
Improvements in the production of books with spacing folds between adjacent book sections
摘要
申请公布号
GB507438(A)
申请公布日期
1939.06.14
申请号
GB19370034637
申请日期
1937.12.14
申请人
LUDOLF COLDITZ
发明人
分类号
B42B2/00;B42B2/02
主分类号
B42B2/00
代理机构
代理人
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