LONGWALL GALLERY GAP-SEALING MAT,申请号GB19880019427-传众专利搜索

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发明名称	LONGWALL GALLERY GAP-SEALING MAT
摘要
申请公布号	GB8819427(D0)	申请公布日期	1988.09.21
申请号	GB19880019427	申请日期	1988.08.16
申请人	SALZGITTER MASCHINENBAU	发明人
分类号	E21D11/15;(IPC1-7):E21D11/15	主分类号	E21D11/15
代理机构		代理人
主权项
地址

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