Improvements in or relating to closures for letter entrance openings of doors or thelike,申请号GB19500030711-传众专利搜索

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发明名称	Improvements in or relating to closures for letter entrance openings of doors or thelike
摘要
申请公布号	GB699106(A)	申请公布日期	1953.10.28
申请号	GB19500030711	申请日期	1950.12.16
申请人	ALFRED FITTON	发明人
分类号	A47G29/126	主分类号	A47G29/126
代理机构		代理人
主权项
地址

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