Trépan pour travaux de mines.,申请号CHD263563-传众专利搜索

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发明名称	Trépan pour travaux de mines.
摘要
申请公布号	CH263563(A)	申请公布日期	1949.09.15
申请号	CHD263563	申请日期	1946.11.23
申请人	DIONISOTTI,JOSEPH	发明人	DIONISOTTI,JOSEPH
分类号	E21B10/40;E21B10/58	主分类号	E21B10/40
代理机构		代理人
主权项
地址

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