Mine haulage and trunk conveyor audible and visual signalling system,申请号GB19490005374-传众专利搜索

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发明名称	Mine haulage and trunk conveyor audible and visual signalling system
摘要
申请公布号	GB662354(A)	申请公布日期	1951.12.05
申请号	GB19490005374	申请日期	1949.02.28
申请人	WILLIAM HENRY DAWSON	发明人
分类号	B66B19/06	主分类号	B66B19/06
代理机构		代理人
主权项
地址

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