Rotatable cutter head,申请号US19590826509-传众专利搜索

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发明名称	Rotatable cutter head
摘要
申请公布号	US3041055(A)	申请公布日期	1962.06.26
申请号	US19590826509	申请日期	1959.07.13
申请人	GOODMAN MANUFACTURING COMPANY	发明人	RISSE RALPH F.
分类号	E21B10/12;E21C27/22	主分类号	E21B10/12
代理机构		代理人
主权项
地址

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