Clean gas seal for bell and hopper,申请号US19480016658-传众专利搜索

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发明名称	Clean gas seal for bell and hopper
摘要
申请公布号	US2765935(A)	申请公布日期	1956.10.09
申请号	US19480016658	申请日期	1948.03.24
申请人	REPUBLIC STEEL CORPORATION	发明人	SCHUMAN LOUIS H.
分类号	C21B7/18	主分类号	C21B7/18
代理机构		代理人
主权项
地址

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