Improvements relating to doors and door frames,申请号GB19470023066-传众专利搜索

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发明名称	Improvements relating to doors and door frames
摘要
申请公布号	GB627935(A)	申请公布日期	1949.08.18
申请号	GB19470023066	申请日期	1947.08.20
申请人	C. W. NORRIS LIMITED;JOHN ENTWISTLE	发明人
分类号	E06B3/82;E06B3/984	主分类号	E06B3/82
代理机构		代理人
主权项
地址

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