DISPOSITIF POUR L'EVACUATION DE LA POUSSIERE DE FORAGE,申请号BE19710768858-传众专利搜索

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发明名称	DISPOSITIF POUR L'EVACUATION DE LA POUSSIERE DE FORAGE
摘要
申请公布号	BE768858(A1)	申请公布日期	1971.12.22
申请号	BE19710768858	申请日期	1971.06.22
申请人	GEBR. BOHLER + CO A.G., ELISABETHSTRASSE, 12, VIENNE 1, (AUTRICHE),	发明人
分类号	B28D;B28D7/02;E21B21/00;E21B21/08;(IPC1-7):B28D/	主分类号	B28D
代理机构		代理人
主权项
地址

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