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发明名称
ROOF VENTILATION FAN
摘要
申请公布号
ZA9110196(B)
申请公布日期
1992.12.30
申请号
ZA19910010196
申请日期
1991.12.30
申请人
THOMAS MICHAEL POWELL
发明人
THOMAS MICHAEL POWELL
分类号
E04D;E04F
主分类号
E04D
代理机构
代理人
主权项
地址
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