Vacuum seal for fan shaft of heat treating furnace,申请号US19510243382-传众专利搜索

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发明名称	Vacuum seal for fan shaft of heat treating furnace
摘要
申请公布号	US2749111(A)	申请公布日期	1956.06.05
申请号	US19510243382	申请日期	1951.08.24
申请人	SURFACE COMBUSTION CORPORATION	发明人	CARTER JOHN W.
分类号	C21D9/673	主分类号	C21D9/673
代理机构		代理人
主权项
地址

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