VENTILATION STOPPING DRIVE,申请号PL19760188406-传众专利搜索

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发明名称	VENTILATION STOPPING DRIVE
摘要
申请公布号	PL108750(B1)	申请公布日期	1980.04.30
申请号	PL19760188406	申请日期	1976.03.30
申请人		发明人
分类号	E05F15/60;E21F1/14;(IPC1-7):21F1/14	主分类号	E05F15/60
代理机构		代理人
主权项
地址

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