Sediment prevention means,申请号US19550500513-传众专利搜索

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发明名称	Sediment prevention means
摘要
申请公布号	US2807807(A)	申请公布日期	1957.10.01
申请号	US19550500513	申请日期	1955.04.11
申请人	HARGIVYS, INCORPORATED	发明人	HARPER ROSCOE H.
分类号	E03D9/02;E03D9/03	主分类号	E03D9/02
代理机构		代理人
主权项
地址

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