Improved device for controlling the entrance aperture of beehives,申请号GB19470033755-传众专利搜索

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发明名称	Improved device for controlling the entrance aperture of beehives
摘要
申请公布号	GB639965(A)	申请公布日期	1950.07.12
申请号	GB19470033755	申请日期	1947.12.22
申请人	GEOFFREY CHARLES NANTES	发明人
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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