Improvements in wall panels,申请号GB19490001120-传众专利搜索

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发明名称	Improvements in wall panels
摘要
申请公布号	GB665919(A)	申请公布日期	1952.02.06
申请号	GB19490001120	申请日期	1949.01.14
申请人	H. H. ROBERTSON COMPANY	发明人
分类号	E04C2/292	主分类号	E04C2/292
代理机构		代理人
主权项
地址

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