Improvements in rotary cutting drums for mineral-mining machines,申请号GB19580022714-传众专利搜索

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发明名称	Improvements in rotary cutting drums for mineral-mining machines
摘要
申请公布号	GB856226(A)	申请公布日期	1960.12.14
申请号	GB19580022714	申请日期	1958.07.15
申请人	BRITISH JEFFREY-DIAMOND LIMITED	发明人	PEARSON DAVID
分类号	E21C25/10	主分类号	E21C25/10
代理机构		代理人
主权项
地址

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