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发明名称
Water feeder
摘要
申请公布号
US2023073(A)
申请公布日期
1935.12.03
申请号
US19310568286
申请日期
1931.10.12
申请人
WALWORTH PATENTS INC.
发明人
HARMAN JOHN J.
分类号
F22D5/12
主分类号
F22D5/12
代理机构
代理人
主权项
地址
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