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发明名称
Reinforcement means for book-binders' boards
摘要
申请公布号
US2175400(A)
申请公布日期
1939.10.10
申请号
US19380210840
申请日期
1938.05.31
申请人
GEORGE KIRSTE
发明人
KIRSTE GEORGE
分类号
B42D3/00
主分类号
B42D3/00
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代理人
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