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经营范围
发明名称
Automatic water supply control
摘要
申请公布号
US2982298(A)
申请公布日期
1961.05.02
申请号
US19590785201
申请日期
1959.01.06
申请人
JOHNSON EARL B
发明人
JOHNSON EARL B.
分类号
E03D1/32;F16K31/24;G05D9/02
主分类号
E03D1/32
代理机构
代理人
主权项
地址
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