Carbon resistance tool,申请号US19410388656-传众专利搜索

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发明名称	Carbon resistance tool
摘要
申请公布号	US2297303(A)	申请公布日期	1942.09.29
申请号	US19410388656	申请日期	1941.04.15
申请人	HUMFELD-HODGEN PROD. CO.	发明人	HUMFELD LAWRENCE W.
分类号	B23K3/03	主分类号	B23K3/03
代理机构		代理人
主权项
地址

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