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发明名称
Perfectionnements aux machines à fabriquer les tuyaux en béton, ciment armé ou analogues
摘要
申请公布号
FR731009(A)
申请公布日期
1932.08.27
申请号
FRD731009
申请日期
1932.02.04
申请人
COTRAB
发明人
分类号
B28B5/00
主分类号
B28B5/00
代理机构
代理人
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