Improvements in or relating to devices for testing the hardness of metals,申请号GB19490019787-传众专利搜索

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发明名称	Improvements in or relating to devices for testing the hardness of metals
摘要
申请公布号	GB664876(A)	申请公布日期	1952.01.16
申请号	GB19490019787	申请日期	1949.07.27
申请人	ALFRED ERNST	发明人
分类号	G01N3/00;G01N3/42	主分类号	G01N3/00
代理机构		代理人
主权项
地址

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