Knock-down culvert,申请号US19350039054-传众专利搜索

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发明名称	Knock-down culvert
摘要
申请公布号	US2041267(A)	申请公布日期	1936.05.19
申请号	US19350039054	申请日期	1935.09.03
申请人	SCHROEDER JR ADOLPH CARL	发明人	JR. ADOLPH CARL SCHROEDER,
分类号	E01F5/00	主分类号	E01F5/00
代理机构		代理人
主权项
地址

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