HOLDER FOR DISK-SHAPED MINING HEADS,申请号PL19830243769-传众专利搜索

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发明名称	HOLDER FOR DISK-SHAPED MINING HEADS
摘要
申请公布号	PL139709(B1)	申请公布日期	1987.02.28
申请号	PL19830243769	申请日期	1983.09.14
申请人		发明人
分类号	E21C;E21C35/18;(IPC1-7):E21C25/12	主分类号	E21C
代理机构		代理人
主权项
地址

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