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发明名称
Verfahren zum Erzielen geringerer Zugspannungen
摘要
申请公布号
DE685225(C)
申请公布日期
1939.12.14
申请号
DE1934K135321D
申请日期
1934.09.16
申请人
PAUL KAEHLER
发明人
分类号
主分类号
代理机构
代理人
主权项
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