Apparatus for the control of railway car retarders,申请号US19320596984-传众专利搜索

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发明名称	Apparatus for the control of railway car retarders
摘要
申请公布号	US1898802(A)	申请公布日期	1933.02.21
申请号	US19320596984	申请日期	1932.03.05
申请人	THE UNION SWITCH & SIGNAL COMPANY	发明人	WOOD WILLARD A.;MACHESNEY ARTHUR R.
分类号	B61K7/08	主分类号	B61K7/08
代理机构		代理人
主权项
地址

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