Apparatus for use in forming pittsburgh joints,申请号US19370156096-传众专利搜索

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发明名称	Apparatus for use in forming pittsburgh joints
摘要
申请公布号	US2159784(A)	申请公布日期	1939.05.23
申请号	US19370156096	申请日期	1937.07.28
申请人	EDWIN DEMMIN GEORGE	发明人	DEMMIN GEORGE EDWIN
分类号	B21D39/02	主分类号	B21D39/02
代理机构		代理人
主权项
地址

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