Valve mechanism for steam locomotives,申请号US19440542990-传众专利搜索

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发明名称	Valve mechanism for steam locomotives
摘要
申请公布号	US2467598(A)	申请公布日期	1949.04.19
申请号	US19440542990	申请日期	1944.06.30
申请人	ROYAL ROBERT R;BELL WILLIAM E	发明人	ROYAL ROBERT R.;BELL WILLIAM E.
分类号		主分类号
代理机构		代理人
主权项
地址

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