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发明名称
Vortreibrohr zur Herstellung von Betonpfaehlen im Erdreich
摘要
申请公布号
DE677458(C)
申请公布日期
1939.06.26
申请号
DE1936H150028D
申请日期
1936.12.22
申请人
HANDELMAATSCHAPPIJ J. DE WIT & ZONEN N.V.
发明人
WIT JOHANNES DE
分类号
E02D5/52;E02D5/66
主分类号
E02D5/52
代理机构
代理人
主权项
地址
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