Apparatus for radially contracting and elongating metal cylinders,申请号US19300469539-传众专利搜索

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发明名称	Apparatus for radially contracting and elongating metal cylinders
摘要
申请公布号	US1792229(A)	申请公布日期	1931.02.10
申请号	US19300469539	申请日期	1930.07.21
申请人	UNITED STATES PIPE AND FOUNDRY COMPANY	发明人	LANGENBERG FREDERICK C.
分类号	B21D26/02	主分类号	B21D26/02
代理机构		代理人
主权项
地址

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