The system which adds a force on portion of door-closer power,申请号KR20090018663-传众专利搜索

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发明名称	The system which adds a force on portion of door-closer power
摘要
申请公布号	KR101177994(B1)	申请公布日期	2012.08.28
申请号	KR20090018663	申请日期	2009.03.05
申请人		发明人
分类号	E05F3/00;E05F1/08;E05F3/18	主分类号	E05F3/00
代理机构		代理人
主权项
地址

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