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经营范围
发明名称
CONNECTING CONCRETE PIPE ELEMENTS
摘要
申请公布号
GB1509790(A)
申请公布日期
1978.05.04
申请号
GB19750051637
申请日期
1975.12.17
申请人
NIPPON CONCRETE IND CO LTD
发明人
分类号
F16L13/02;F16L25/00;(IPC1-7):F16L13/02
主分类号
F16L13/02
代理机构
代理人
主权项
地址
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