Siren for the production of sharp cut tones of short duration,申请号US19330696819-传众专利搜索

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发明名称	Siren for the production of sharp cut tones of short duration
摘要
申请公布号	US1985954(A)	申请公布日期	1935.01.01
申请号	US19330696819	申请日期	1933.11.06
申请人	ECHOMETER GESELLSCHAFT MIT BESCHRANKTER HAFTUNG	发明人	SETTEGAST BERNHARD
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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