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发明名称
Interlocking roofing tile
摘要
申请公布号
US2644410(A)
申请公布日期
1953.07.07
申请号
US19510258414
申请日期
1951.11.27
申请人
WEBER FRED L
发明人
WEBER FRED L.
分类号
E04D1/04;E04D1/34
主分类号
E04D1/04
代理机构
代理人
主权项
地址
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