Ventilating hive cover,申请号US19470739072-传众专利搜索

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发明名称	Ventilating hive cover
摘要
申请公布号	US2548275(A)	申请公布日期	1951.04.10
申请号	US19470739072	申请日期	1947.04.03
申请人	WATKINS GEORGE F	发明人	WATKINS GEORGE F.
分类号	A01K47/06	主分类号	A01K47/06
代理机构		代理人
主权项
地址

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