Improvements in grid bricks,申请号GB19320012227-传众专利搜索

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发明名称	Improvements in grid bricks
摘要
申请公布号	GB380754(A)	申请公布日期	1932.09.22
申请号	GB19320012227	申请日期	1932.04.28
申请人	ROBERT LUENGEN	发明人
分类号	C21B9/06	主分类号	C21B9/06
代理机构		代理人
主权项
地址

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