Track lifter and shifter,申请号US19440550095-传众专利搜索

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法人/股东/高管

发明名称	Track lifter and shifter
摘要
申请公布号	US2392717(A)	申请公布日期	1946.01.08
申请号	US19440550095	申请日期	1944.08.18
申请人	ARMSTRONG HENRY H	发明人	ARMSTRONG HENRY H.
分类号	E01B33/04	主分类号	E01B33/04
代理机构		代理人
主权项
地址

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