Projection display and method of displaying replacement time of air filter installed,申请号KR19990018657-传众专利搜索

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发明名称	Projection display and method of displaying replacement time of air filter installed
摘要
申请公布号	KR100561384(B1)	申请公布日期	2006.03.16
申请号	KR19990018657	申请日期	1999.05.24
申请人		发明人
分类号	H04N5/74	主分类号	H04N5/74
代理机构		代理人
主权项
地址

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