Process for the production of iron sleepers,申请号US19320589466-传众专利搜索

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发明名称	Process for the production of iron sleepers
摘要
申请公布号	US2023827(A)	申请公布日期	1935.12.10
申请号	US19320589466	申请日期	1932.01.28
申请人	THE FIRM VEREINIGTE STAHLWERKE AKTIENGESELLSCHAFT	发明人	WALLMANN CARL;KRUSE BERNHARD
分类号	B21H7/00;B21K7/00;B21K9/00	主分类号	B21H7/00
代理机构		代理人
主权项
地址

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