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经营范围
发明名称
TUNNEL LINER AND METHOD OF MAKING SAME
摘要
申请公布号
US3449916(A)
申请公布日期
1969.06.17
申请号
USD3449916
申请日期
1967.07.12
申请人
JOHN R. TABOR
发明人
JOHN R. TABOR
分类号
E21D11/08;(IPC1-7):E21D11/08;E01G5/02;E04C1/10
主分类号
E21D11/08
代理机构
代理人
主权项
地址
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