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发明名称
Improvements in and relating to ring mechanisms for binding papers and the like
摘要
申请公布号
GB1010259(A)
申请公布日期
1965.11.17
申请号
GB19640041583
申请日期
1964.10.12
申请人
ROBERT KRAUSE;FRIEDEL ROMANN;EDITH ROTH
发明人
分类号
B42F13/26
主分类号
B42F13/26
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