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发明名称
Roof ventilation system
摘要
申请公布号
GB2334977(A)
申请公布日期
1999.09.08
申请号
GB19980004862
申请日期
1998.03.06
申请人
DAVID CHRISTOPHER * HUMPHRIES
发明人
DAVID CHRISTOPHER * HUMPHRIES
分类号
E04D13/143;E04D13/17;(IPC1-7):E04D13/14
主分类号
E04D13/143
代理机构
代理人
主权项
地址
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