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发明名称
Federring aus gewalztem Werkstoff, insbesondere fuer Eisenbahnschienenschrauben
摘要
申请公布号
DE662387(C)
申请公布日期
1938.07.12
申请号
DENDATM129710D
申请日期
申请人
PAULA MANNSNETTER GEB. MELLEN
发明人
分类号
E01B11/38
主分类号
E01B11/38
代理机构
代理人
主权项
地址
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