Method of making valve bodies,申请号US19320607787-传众专利搜索

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发明名称	Method of making valve bodies
摘要
申请公布号	US1956554(A)	申请公布日期	1934.05.01
申请号	US19320607787	申请日期	1932.04.27
申请人	THE WEATHERHEAD COMPANY	发明人	JR. JOHN D. BALDWIN,
分类号	B21K1/24	主分类号	B21K1/24
代理机构		代理人
主权项
地址

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