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发明名称
Spannring-Sicherung fuer Muffenrohrdichtungen
摘要
申请公布号
DE750619(C)
申请公布日期
1945.01.20
申请号
DE1935M132150D
申请日期
1935.09.24
申请人
发明人
分类号
F16L21/04
主分类号
F16L21/04
代理机构
代理人
主权项
地址
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