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发明名称
Shingle element
摘要
申请公布号
US1885346(A)
申请公布日期
1932.11.01
申请号
US19300484077
申请日期
1930.09.24
申请人
HARSHBERGER NORMAN P
发明人
HARSHBERGER NORMAN P.
分类号
E04D1/26
主分类号
E04D1/26
代理机构
代理人
主权项
地址
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