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经营范围
发明名称
Improvements in or relating to prestressed tubes
摘要
申请公布号
GB1111389(A)
申请公布日期
1968.04.24
申请号
GB19640040872
申请日期
1964.10.07
申请人
SIMON-CARVES LIMITED
发明人
分类号
B21F17/00;B28B23/14
主分类号
B21F17/00
代理机构
代理人
主权项
地址
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