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发明名称
DICHTUNGS- UND PACKUNGSRING BZW. DOPPELLIPPENPACKUNG.
摘要
申请公布号
DE1750258(U)
申请公布日期
1957.08.08
申请号
DE195700H4913U
申请日期
1957.05.08
申请人
FRANZ HARTMANN
发明人
FRANZ HARTMANN
分类号
主分类号
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