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发明名称
摘要
申请公布号
GB1230640(A)
申请公布日期
1971.05.05
申请号
GBD1230640
申请日期
1968.06.14
申请人
发明人
分类号
D04H1/4258;D04H1/43;D04H1/4334;D04H1/587;D04H1/645;D04H1/65
主分类号
D04H1/4258
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