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发明名称
COMBINATION STIRRUP AND SPACER FOR RE-ENFORCED CONCRETE PIPE AND LIKE STRUCTURE
摘要
申请公布号
US3440792(A)
申请公布日期
1969.04.29
申请号
USD3440792
申请日期
1967.10.20
申请人
HARTZELL H. SCHMIDGALL
发明人
HARTZELL H. SCHMIDGALL
分类号
E04C5/16;(IPC1-7):E04C5/16;E04H12/06;E04H12/12
主分类号
E04C5/16
代理机构
代理人
主权项
地址
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