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发明名称
摘要
申请公布号
NL6709362(A)
申请公布日期
1968.01.08
申请号
NL19670009362
申请日期
1967.07.05
申请人
发明人
分类号
C09B62/016;C09B62/44
主分类号
C09B62/016
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