Friction draft gear,申请号US19310567578-传众专利搜索

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发明名称	Friction draft gear
摘要
申请公布号	US1883064(A)	申请公布日期	1932.10.18
申请号	US19310567578	申请日期	1931.10.08
申请人	CARDWELL WESTINGHOUSE COMPANY	发明人	STEVENS ROY R.
分类号	B61G9/10	主分类号	B61G9/10
代理机构		代理人
主权项
地址

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