Connecting truss for drain pipes,申请号US19310581333-传众专利搜索

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发明名称	Connecting truss for drain pipes
摘要
申请公布号	US1941358(A)	申请公布日期	1933.12.26
申请号	US19310581333	申请日期	1931.12.16
申请人	THE ELK RIVER CONCRETE PRODUCTS CO.	发明人	LONGFELLOW DWIGHT W.
分类号	E02B11/00	主分类号	E02B11/00
代理机构		代理人
主权项
地址

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