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发明名称
SHAFT AND TUNNEL LINING
摘要
申请公布号
US3483706(A)
申请公布日期
1969.12.16
申请号
USD3483706
申请日期
1967.06.19
申请人
COMMERCIAL SHEARING & STAMPING CO.
发明人
SAMUEL TARADASH;NICHOLAS CHLUMECKY
分类号
E21D11/15;(IPC1-7):E21D11/22;E04C1/30;E04F15/14
主分类号
E21D11/15
代理机构
代理人
主权项
地址
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