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发明名称
摘要
申请公布号
GB349969(A)
申请公布日期
1931.06.04
申请号
GB19300006980
申请日期
1930.03.03
申请人
CARL FRITZ HOFMANN
发明人
分类号
D01H7/62
主分类号
D01H7/62
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