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经营范围
发明名称
VENTILATING DEVICE
摘要
申请公布号
JPS5457349(A)
申请公布日期
1979.05.09
申请号
JP19780117349
申请日期
1978.09.22
申请人
NORTHERN ENG IND
发明人
AREN SUMISU
分类号
E21F1/00;F04D19/00;F04D29/64;F24F7/06
主分类号
E21F1/00
代理机构
代理人
主权项
地址
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