Roller grinding machine,申请号US19350053019-传众专利搜索

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发明名称	Roller grinding machine
摘要
申请公布号	US2048634(A)	申请公布日期	1936.07.21
申请号	US19350053019	申请日期	1935.12.05
申请人	THE BLACK ROCK MANUFACTURING COMPANY	发明人	KELLER JOSEPH R.
分类号	B24B5/04	主分类号	B24B5/04
代理机构		代理人
主权项
地址

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