Improvements in or relating to submarine safety devices,申请号GB19300022257-传众专利搜索

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发明名称	Improvements in or relating to submarine safety devices
摘要
申请公布号	GB354041(A)	申请公布日期	1931.08.06
申请号	GB19300022257	申请日期	1930.07.23
申请人	JOHN PLUM	发明人
分类号	B63G8/24	主分类号	B63G8/24
代理机构		代理人
主权项
地址

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