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发明名称
Improvements relating to roofing tiles
摘要
申请公布号
GB774387(A)
申请公布日期
1957.05.08
申请号
GB19540000490
申请日期
1954.01.07
申请人
JOHN BOARD & COMPANY LIMITED;WILLIAM BRAMWELL HALES
发明人
分类号
E04D1/02
主分类号
E04D1/02
代理机构
代理人
主权项
地址
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