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发明名称
Process for producing calcium sulphate
摘要
申请公布号
US2177254(A)
申请公布日期
1939.10.24
申请号
US19370145051
申请日期
1937.05.27
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
HECKERT WINFIELD WALTER
分类号
C01F11/46
主分类号
C01F11/46
代理机构
代理人
主权项
地址
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