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发明名称
Sicherungsvorrichtung bei einem Vortreibrohr zur Herstellung von Pressbetonpfaehlen
摘要
申请公布号
DE656837(C)
申请公布日期
1938.02.16
申请号
DE1934S115549D
申请日期
1934.09.29
申请人
NIKOLAUS SPIESS
发明人
分类号
E02D5/42;E02D5/66
主分类号
E02D5/42
代理机构
代理人
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地址
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