Air raid warning siren,申请号US19530341065-传众专利搜索

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发明名称	Air raid warning siren
摘要
申请公布号	US2688302(A)	申请公布日期	1954.09.07
申请号	US19530341065	申请日期	1953.03.09
申请人	DESMOND WILLIAM F	发明人	DESMOND WILLIAM F.
分类号	G10K7/04	主分类号	G10K7/04
代理机构		代理人
主权项
地址

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