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经营范围
发明名称
VENTILATING DEVICE
摘要
申请公布号
GB8404690(D0)
申请公布日期
1984.03.28
申请号
GB19840004690
申请日期
1984.02.22
申请人
EICKOFF MASCHINENFABRIK U EISENGIESSEREI MBH GEBR
发明人
分类号
E21C27/02;E21C35/22;(IPC1-7):E21C35/22
主分类号
E21C27/02
代理机构
代理人
主权项
地址
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