Micrometer master gauge,申请号US19410376227-传众专利搜索

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发明名称	Micrometer master gauge
摘要
申请公布号	US2345591(A)	申请公布日期	1944.04.04
申请号	US19410376227	申请日期	1941.01.27
申请人	FREDERICK JEAN R	发明人	FREDERICK JEAN R.
分类号	G01B3/30	主分类号	G01B3/30
代理机构		代理人
主权项
地址

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