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发明名称
摘要
申请公布号
NL6910004(A)
申请公布日期
1971.01.04
申请号
NL19690010004
申请日期
1969.06.30
申请人
发明人
分类号
B65H23/04;D21F1/36;(IPC1-7):D21F1/40;B65H77/00
主分类号
B65H23/04
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