GATHERING OR LOADING DEVICE,申请号GB19770046662-传众专利搜索

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发明名称	GATHERING OR LOADING DEVICE
摘要
申请公布号	GB1590324(A)	申请公布日期	1981.05.28
申请号	GB19770046662	申请日期	1977.11.09
申请人	DRESSER INDUSTRIES INC	发明人
分类号	E21C27/24;E21D9/12;(IPC1-7):E21C35/00	主分类号	E21C27/24
代理机构		代理人
主权项
地址

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