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发明名称
RINGFOERMIGE DICHTUNG.
摘要
申请公布号
DE1746851(U)
申请公布日期
1957.06.13
申请号
DE195700T8131U
申请日期
1957.04.16
申请人
ERICH KARL TODTENHAUPT
发明人
ERICH KARL TODTENHAUPT
分类号
主分类号
代理机构
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