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发明名称
摘要
申请公布号
BE671831(A)
申请公布日期
1966.03.01
申请号
BE19650671831
申请日期
1965.11.04
申请人
发明人
分类号
B41L1/20;B42D19/00;G09B3/04
主分类号
B41L1/20
代理机构
代理人
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地址
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