Brake shelf for railroad cars,申请号US19300418574-传众专利搜索

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发明名称	Brake shelf for railroad cars
摘要
申请公布号	US1831517(A)	申请公布日期	1931.11.10
申请号	US19300418574	申请日期	1930.01.04
申请人	TATUM JOHN J	发明人	TATUM JOHN 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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