Improvements in internal vibrators,申请号GB19570021858-传众专利搜索

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发明名称	Improvements in internal vibrators
摘要
申请公布号	GB859547(A)	申请公布日期	1961.01.25
申请号	GB19570021858	申请日期	1957.07.10
申请人	WILHELM DEGEN	发明人
分类号	E02D3/054;E02D7/28;E21B7/24;E21B7/26	主分类号	E02D3/054
代理机构		代理人
主权项
地址

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