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发明名称	Railway car truck
摘要
申请公布号	US1819564(A)	申请公布日期	1931.08.18
申请号	US19290342135	申请日期	1929.02.23
申请人	BIRDSBORO STEEL FOUNDRY AND MACHINE COMPANY	发明人	MARTIN MARK H.
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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