Method of making a brake beam,申请号US19490073629-传众专利搜索

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发明名称	Method of making a brake beam
摘要
申请公布号	US2648750(A)	申请公布日期	1953.08.11
申请号	US19490073629	申请日期	1949.01.29
申请人	AMERICAN STEEL FOUNDRIES	发明人	WHITNEY LOREN L.
分类号	B23K9/00	主分类号	B23K9/00
代理机构		代理人
主权项
地址

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