Attachment of a ventilation valve in a duct or opening with round cross section,申请号FI19880003787-传众专利搜索

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发明名称	Attachment of a ventilation valve in a duct or opening with round cross section
摘要
申请公布号	FI85765(B)	申请公布日期	1992.02.14
申请号	FI19880003787	申请日期	1988.08.16
申请人	OSTON LTD	发明人	AALTO, ERKKI;TOLMUNEN, ARVI;HAESAE, JUHANI
分类号	F24F13/06;(IPC1-7):F24F13/06	主分类号	F24F13/06
代理机构		代理人
主权项
地址

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