Improvements in or relating to sub-aqueous pressure wave apparatus, for example to echo sounders,申请号GB19460016390-传众专利搜索

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发明名称	Improvements in or relating to sub-aqueous pressure wave apparatus, for example to echo sounders
摘要
申请公布号	GB626310(A)	申请公布日期	1949.07.13
申请号	GB19460016390	申请日期	1946.05.29
申请人	MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED;JAMES TWATT	发明人
分类号	G01S7/529	主分类号	G01S7/529
代理机构		代理人
主权项
地址

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