Draft gear for railway cars,申请号US19390290065-传众专利搜索

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发明名称	Draft gear for railway cars
摘要
申请公布号	US2197669(A)	申请公布日期	1940.04.16
申请号	US19390290065	申请日期	1939.08.14
申请人	STEPHENS WILLIE T	发明人	STEPHENS WILLIE T.
分类号	B61G9/12	主分类号	B61G9/12
代理机构		代理人
主权项
地址

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