Echo sounding apparatus,申请号US19340738686-传众专利搜索

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发明名称	Echo sounding apparatus
摘要
申请公布号	US2084845(A)	申请公布日期	1937.06.22
申请号	US19340738686	申请日期	1934.08.06
申请人	ARTHUR JOSEPH HUGHES;HENRY HUGHES & SON, LIMITED	发明人	HOLMES EDWARD LOWTHER
分类号	G01S15/10	主分类号	G01S15/10
代理机构		代理人
主权项
地址

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