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发明名称
WATER SOFTENING SYSTEM
摘要
申请公布号
CA306975(A)
申请公布日期
1930.12.23
申请号
CAD306975
申请日期
申请人
THE FLORIDA WATER SOFTENER
发明人
WILLIAM EMMET DUNBAR
分类号
主分类号
代理机构
代理人
主权项
地址
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