CONTACT BIOFILTER OF PLASTIC,ESPECIALLY TRICKLING FILTER FOR SEWAGE TREATMENT EQUIPMENT,申请号PL19770201708-传众专利搜索

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发明名称	CONTACT BIOFILTER OF PLASTIC,ESPECIALLY TRICKLING FILTER FOR SEWAGE TREATMENT EQUIPMENT
摘要
申请公布号	PL114298(B1)	申请公布日期	1981.01.31
申请号	PL19770201708	申请日期	1977.10.24
申请人		发明人
分类号	(IPC1-7):C02C1/04	主分类号	(IPC1-7):C02C1/04
代理机构		代理人
主权项
地址

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