Adjustable internal expansion grinder,申请号US19460644006-传众专利搜索

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发明名称	Adjustable internal expansion grinder
摘要
申请公布号	US2448600(A)	申请公布日期	1948.09.07
申请号	US19460644006	申请日期	1946.01.29
申请人	KELLER SPENCER R	发明人	KELLER SPENCER R.
分类号	B24B33/08	主分类号	B24B33/08
代理机构		代理人
主权项
地址

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