Method of making valves,申请号US19320613317-传众专利搜索

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发明名称	Method of making valves
摘要
申请公布号	US1948793(A)	申请公布日期	1934.02.27
申请号	US19320613317	申请日期	1932.05.24
申请人	ALUMINUM INDUSTRIES, INC.	发明人	JR. RICHARD B. LEWIS,
分类号	B21K1/22;F01L3/02	主分类号	B21K1/22
代理机构		代理人
主权项
地址

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