Improvements in or connected with cutter-chains for cutter-chain mining machines,申请号GB19430014716-传众专利搜索

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发明名称	Improvements in or connected with cutter-chains for cutter-chain mining machines
摘要
申请公布号	GB570860(A)	申请公布日期	1945.07.25
申请号	GB19430014716	申请日期	1943.09.08
申请人	WILLIAM ARCHIBALD LOGAN	发明人
分类号	E21C35/193	主分类号	E21C35/193
代理机构		代理人
主权项
地址

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