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发明名称
Portland cement
摘要
申请公布号
US2225150(A)
申请公布日期
1940.12.17
申请号
US19390251046
申请日期
1939.01.14
申请人
CALIFORNIA PORTLAND CEMENT COMPANY
发明人
BECHTOLD IRA C.;KAISER HARRY E.
分类号
C04B24/34;C04B28/04
主分类号
C04B24/34
代理机构
代理人
主权项
地址
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