Freezing trap for vacuum systems,申请号US19480015785-传众专利搜索

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发明名称	Freezing trap for vacuum systems
摘要
申请公布号	US2465793(A)	申请公布日期	1949.03.29
申请号	US19480015785	申请日期	1948.03.19
申请人	GENERAL ELECTRIC COMPANY	发明人	GROAT CHARLES T. DE
分类号	F25D31/00	主分类号	F25D31/00
代理机构		代理人
主权项
地址

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