Sludge removal bonnet for core drills and the like,申请号US19610109437-传众专利搜索

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发明名称	Sludge removal bonnet for core drills and the like
摘要
申请公布号	US3033298(A)	申请公布日期	1962.05.08
申请号	US19610109437	申请日期	1961.05.11
申请人	JOHNSON BERT E	发明人	JOHNSON BERT E.
分类号	B23Q9/00;B23Q11/00;B24B27/06;B25B11/00;B28D1/04	主分类号	B23Q9/00
代理机构		代理人
主权项
地址

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