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经营范围
发明名称
AN IMPROVED ROOF VENT
摘要
申请公布号
GB1204571(A)
申请公布日期
1970.09.09
申请号
GB19680017678
申请日期
1968.04.11
申请人
PERMANITE LIMITED
发明人
RAYMOND MONTAGUE EDWARDS
分类号
E04D13/17;F24F7/02
主分类号
E04D13/17
代理机构
代理人
主权项
地址
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