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发明名称
Improvements in or relating to the manufacture of tubes of concrete and the like material having an arbitrary internal profile
摘要
申请公布号
GB811344(A)
申请公布日期
1959.04.02
申请号
GB19560014519
申请日期
1956.05.10
申请人
HENRICUS FRANCISCUS MARIA SMITS
发明人
分类号
B28B21/06;B28B21/16
主分类号
B28B21/06
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代理人
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