Rail track heater,申请号US19480057871-传众专利搜索

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发明名称	Rail track heater
摘要
申请公布号	US2585648(A)	申请公布日期	1952.02.12
申请号	US19480057871	申请日期	1948.11.02
申请人	GREENFIELD WALTER H	发明人	GREENFIELD WALTER H.
分类号	E01B7/24	主分类号	E01B7/24
代理机构		代理人
主权项
地址

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