Brake step for railway cars,申请号US19400348707-传众专利搜索

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发明名称	Brake step for railway cars
摘要
申请公布号	US2236654(A)	申请公布日期	1941.04.01
申请号	US19400348707	申请日期	1940.07.31
申请人	STRID SVEN J	发明人	STRID SVEN J.
分类号	B61D23/00	主分类号	B61D23/00
代理机构		代理人
主权项
地址

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