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发明名称
LUEFTUNGSVORRICHTUNG.
摘要
申请公布号
DE1757770(U)
申请公布日期
1957.12.12
申请号
DE195300T4353U
申请日期
1953.12.29
申请人
HERMANN TIETJENS
发明人
HERMANN TIETJENS
分类号
主分类号
代理机构
代理人
主权项
地址
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