Method of making valves,申请号US19480050899-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	US2669011(A)	申请公布日期	1954.02.16
申请号	US19480050899	申请日期	1948.09.24
申请人	VERNON BRUMBAUGH ISAAC	发明人	BRUMBAUGH ISAAC VERNON
分类号	B21K1/20	主分类号	B21K1/20
代理机构		代理人
主权项
地址

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