Hardness test machine,申请号US19370166907-传众专利搜索

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发明名称	Hardness test machine
摘要
申请公布号	US2198259(A)	申请公布日期	1940.04.23
申请号	US19370166907	申请日期	1937.10.02
申请人	PYRO-ELECTRO INSTRUMENT CO.	发明人	SMITH CLARENCE E.
分类号	G01N3/42	主分类号	G01N3/42
代理机构		代理人
主权项
地址

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