Improvements in automatic door-closing devices,申请号GB19320019155-传众专利搜索

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发明名称	Improvements in automatic door-closing devices
摘要
申请公布号	GB408565(A)	申请公布日期	1934.04.12
申请号	GB19320019155	申请日期	1932.07.06
申请人	JULIEN LOUIS LEVASSEUR	发明人
分类号	E05F3/10	主分类号	E05F3/10
代理机构		代理人
主权项
地址

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