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发明名称
Procédé et dispositif pour la pose de canalisations d'acier sous le lit de masses d'eau, en particulier d'un canal ou d'un fleuve
摘要
申请公布号
FR1461735(A)
申请公布日期
1966.02.25
申请号
FR19650038190
申请日期
1965.11.12
申请人
发明人
HARMSTORF RUDOLF
分类号
E02F5/10;F16L1/20
主分类号
E02F5/10
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代理人
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