YIELDABLE TUBULAR SPRAG FOR USE IN MINES,申请号PL19990332683-传众专利搜索

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发明名称	YIELDABLE TUBULAR SPRAG FOR USE IN MINES
摘要
申请公布号	PL332683(A3)	申请公布日期	2000.10.23
申请号	PL19990332683	申请日期	1999.04.20
申请人	DONICA JAN;FALKOWSKI EUGENIUSZ	发明人
分类号	E21D11/28;(IPC1-7):E21D11/28	主分类号	E21D11/28
代理机构		代理人
主权项
地址

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