Screw thread grinding attachment,申请号US19520281380-传众专利搜索

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发明名称	Screw thread grinding attachment
摘要
申请公布号	US2724223(A)	申请公布日期	1955.11.22
申请号	US19520281380	申请日期	1952.04.09
申请人	FENNELL WILLIAM J	发明人	FENNELL WILLIAM J.
分类号	B24B19/02	主分类号	B24B19/02
代理机构		代理人
主权项
地址

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