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发明名称
Verfahren zur Herstellung von geteerten Dichtungsstricken zum Verdichten von Tonrohren
摘要
申请公布号
DE813967(C)
申请公布日期
1951.09.17
申请号
DE1949H000361
申请日期
1949.11.01
申请人
FA. HERMANN HELMRICH
发明人
HELMRICH RUDOLF
分类号
D07B7/12
主分类号
D07B7/12
代理机构
代理人
主权项
地址
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