Acoustic alarm device,申请号US19560613644-传众专利搜索

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发明名称	Acoustic alarm device
摘要
申请公布号	US2921551(A)	申请公布日期	1960.01.19
申请号	US19560613644	申请日期	1956.10.03
申请人	SVENSKA AKTIEBOLAGET GASACCUMULATOR	发明人	HAGGER ALBERT
分类号	G10K5/00	主分类号	G10K5/00
代理机构		代理人
主权项
地址

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