Method of making building material,申请号US19440524685-传众专利搜索

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发明名称	Method of making building material
摘要
申请公布号	US2442422(A)	申请公布日期	1948.06.01
申请号	US19440524685	申请日期	1944.03.02
申请人	LOETSCHER FRED R	发明人	LOETSCHER FRED R.
分类号	B32B27/00;E04C2/24	主分类号	B32B27/00
代理机构		代理人
主权项
地址

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