Spring system for railway car trucks,申请号US19320623359-传众专利搜索

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发明名称	Spring system for railway car trucks
摘要
申请公布号	US2044503(A)	申请公布日期	1936.06.16
申请号	US19320623359	申请日期	1932.07.19
申请人	HEWITT WILLIAM R	发明人	HEWITT WILLIAM R.
分类号	B61F5/12	主分类号	B61F5/12
代理机构		代理人
主权项
地址

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