Improvements in or relating to echo sounders and like devices for distance measuringin water,申请号GB19470001407-传众专利搜索

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发明名称	Improvements in or relating to echo sounders and like devices for distance measuringin water
摘要
申请公布号	GB633490(A)	申请公布日期	1949.12.19
申请号	GB19470001407	申请日期	1947.01.15
申请人	MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED;JAMES TWATT	发明人
分类号	G01S13/70;G01S15/18	主分类号	G01S13/70
代理机构		代理人
主权项
地址

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