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经营范围
发明名称
Roof anchor
摘要
申请公布号
US3303623(A)
申请公布日期
1967.02.14
申请号
US19630313622
申请日期
1963.10.03
申请人
HAWKINS ELGRIN C
发明人
HAWKINS ELGRIN C.
分类号
E04D3/36
主分类号
E04D3/36
代理机构
代理人
主权项
地址
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