Method of making building blocks,申请号US19380219996-传众专利搜索

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发明名称	Method of making building blocks
摘要
申请公布号	US2201298(A)	申请公布日期	1940.05.21
申请号	US19380219996	申请日期	1938.07.19
申请人	DAVID MARTIN	发明人	MARTIN DAVID
分类号	B28B7/00;B28B23/02;E04B2/02;E04B2/30;E04C2/30	主分类号	B28B7/00
代理机构		代理人
主权项
地址

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