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发明名称
Method of rehabilitating manholes by custom lining/relining
摘要
申请公布号
US5002438(A)
申请公布日期
1991.03.26
申请号
US19900460652
申请日期
1990.01.03
申请人
STRONG, WILLIAM A.
发明人
STRONG, WILLIAM A.
分类号
E02D29/12;E04F21/14
主分类号
E02D29/12
代理机构
代理人
主权项
地址
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