Устройство для автоматической сигнализации при засорении вентиляционных труб,申请号SU19280037867-传众专利搜索

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发明名称	Устройство для автоматической сигнализации при засорении вентиляционных труб
摘要
申请公布号	SU22530(A1)	申请公布日期	1931.08.31
申请号	SU19280037867	申请日期	1928.12.15
申请人	DANILEVSKIJ P.A.	发明人	DANILEVSKIJ P.A.
分类号	G08B21/12	主分类号	G08B21/12
代理机构		代理人
主权项
地址

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