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发明名称
Grating
摘要
申请公布号
US3156168(A)
申请公布日期
1964.11.10
申请号
US19600023687
申请日期
1960.04.21
申请人
RELIANCE STEEL PRODUCTS COMPANY
发明人
NAGIN HARRY S.;NAGIN HAROLD
分类号
E01D19/12;E04C2/42
主分类号
E01D19/12
代理机构
代理人
主权项
地址
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