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发明名称
摘要
申请公布号
BE707638(A)
申请公布日期
1968.06.06
申请号
BED707638
申请日期
1967.12.06
申请人
发明人
分类号
C09B1/34
主分类号
C09B1/34
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代理人
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地址
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