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经营范围
发明名称
Improvements in or relating to the production of base exchanging water softening substances
摘要
申请公布号
GB401235(A)
申请公布日期
1933.11.09
申请号
GB19330019158
申请日期
1933.07.06
申请人
AKTIEBOLAGET FILTRUM
发明人
分类号
C01B33/46
主分类号
C01B33/46
代理机构
代理人
主权项
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