发明授权
- 专利标题: Electric furnace
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申请号: US59964122申请日: 1922-11-08
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公开(公告)号: US1555401A公开(公告)日: 1925-09-29
- 发明人: CADWELL CHARLES A
- 申请人: ELECTRIC RAILWAY IMPROVEMENT CO
- 专利权人: Electric Railway Improvement Co
- 当前专利权人: Electric Railway Improvement Co
- 优先权: US59964122 1922-11-08
- 主分类号: H05B3/64
- IPC分类号: H05B3/64
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