BARRIER PLUG FOR A BORE,申请号CA19912039664-传众专利搜索

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发明名称	BARRIER PLUG FOR A BORE
摘要
申请公布号	CA2039664(A1)	申请公布日期	1991.10.20
申请号	CA19912039664	申请日期	1991.04.03
申请人	INGERSOLL-RAND COMPANY	发明人	GRBAVAC, ROGER;MCCARTNEY, CLIFFORD A.
分类号	E21D20/02;(IPC1-7):E02D5/74;E04B1/41	主分类号	E21D20/02
代理机构		代理人
主权项
地址

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