Method and means for draining railroad ties,申请号US19400368152-传众专利搜索

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发明名称	Method and means for draining railroad ties
摘要
申请公布号	US2269543(A)	申请公布日期	1942.01.13
申请号	US19400368152	申请日期	1940.12.02
申请人	MOBERLY WILLIAM A	发明人	MOBERLY WILLIAM A.
分类号	E01B3/02	主分类号	E01B3/02
代理机构		代理人
主权项
地址

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