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经营范围
发明名称
Water softening gels
摘要
申请公布号
US1849985(A)
申请公布日期
1932.03.15
申请号
US19310518286
申请日期
1931.02.25
申请人
THE PERMUTIT COMPANY
发明人
LIEBKNECHT OTTO
分类号
C01B33/46
主分类号
C01B33/46
代理机构
代理人
主权项
地址
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