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发明名称
Verfahren zum Herstellen von Hohlkoerpern aus Beton unter Vorspannung der Bewehrungen
摘要
申请公布号
DE657155(C)
申请公布日期
1938.02.25
申请号
DE1934F077069D
申请日期
1934.02.08
申请人
EUGENE FREYSSINET
发明人
分类号
B28B21/62
主分类号
B28B21/62
代理机构
代理人
主权项
地址
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