Improvements in or relating to door structures,申请号GB19480025815-传众专利搜索

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发明名称	Improvements in or relating to door structures
摘要
申请公布号	GB675998(A)	申请公布日期	1952.07.23
申请号	GB19480025815	申请日期	1948.10.04
申请人	ERIC SIGFRID PERSSON	发明人
分类号	E06B3/70;E06B3/72	主分类号	E06B3/70
代理机构		代理人
主权项
地址

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