Method of making composite panel elements,申请号US19380242676-传众专利搜索

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发明名称	Method of making composite panel elements
摘要
申请公布号	US2256272(A)	申请公布日期	1941.09.16
申请号	US19380242676	申请日期	1938.11.28
申请人	ALLEGHENY LUDIUM STEEL CORPORATION	发明人	BATCHELLER CLEMENTS
分类号	B21D53/74	主分类号	B21D53/74
代理机构		代理人
主权项
地址

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