BACK DRAFT VALVE FOR BLAST FURNACE INSTALLATION,申请号USD3439910-传众专利搜索

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发明名称	BACK DRAFT VALVE FOR BLAST FURNACE INSTALLATION
摘要
申请公布号	US3439910(A)	申请公布日期	1969.04.22
申请号	USD3439910	申请日期	1966.07.27
申请人	ZIMMERMANN & JANSEN GMBH.	发明人	DONALD H. REGELIN;JAKOB ENGELS
分类号	C21B9/12;(IPC1-7):F27D7/00	主分类号	C21B9/12
代理机构		代理人
主权项
地址

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