Aggregate for improving portland cement concretes,申请号US19450620629-传众专利搜索

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发明名称	Aggregate for improving portland cement concretes
摘要
申请公布号	US2458039(A)	申请公布日期	1949.01.04
申请号	US19450620629	申请日期	1945.10.05
申请人	WAIT BERTRAND H	发明人	WAIT BERTRAND H.
分类号	C04B28/04	主分类号	C04B28/04
代理机构		代理人
主权项
地址

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