Improvements in or relating to door closing devices,申请号GB19400012005-传众专利搜索

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发明名称	Improvements in or relating to door closing devices
摘要
申请公布号	GB539911(A)	申请公布日期	1941.09.29
申请号	GB19400012005	申请日期	1940.07.22
申请人	HAROLD AUGUSTUS ASTON	发明人
分类号	E05F5/02	主分类号	E05F5/02
代理机构		代理人
主权项
地址

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