- 专利标题: Pool-type discharge device
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申请号: US19189738申请日: 1938-02-23
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公开(公告)号: US2175894A公开(公告)日: 1939-10-10
- 发明人: HUTCHINGS JOHN H
- 申请人: GEN ELECTRIC
- 专利权人: Gen Electric
- 当前专利权人: Gen Electric
- 优先权: US19189738 1938-02-23
- 主分类号: H01J13/22
- IPC分类号: H01J13/22