BORING TYPE MINING MACHINE HAVING AUXILIARY ROTARY CUTTER BARS FORMING EXTENSIONS ON THE MAIN ROTARY CUTTER BAR,申请号CAD888590-传众专利搜索

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发明名称	BORING TYPE MINING MACHINE HAVING AUXILIARY ROTARY CUTTER BARS FORMING EXTENSIONS ON THE MAIN ROTARY CUTTER BAR
摘要
申请公布号	CA888590(A)	申请公布日期	1971.12.21
申请号	CAD888590	申请日期
申请人	NATIONAL MINE SERVICE COMPANY	发明人	NOLAN E. EVANS
分类号		主分类号
代理机构		代理人
主权项
地址

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