- 专利标题: Electric signal for railways.
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申请号: US1907394549申请日: 1907-09-25
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公开(公告)号: US895589A公开(公告)日: 1908-08-11
- 发明人: SIMS JOHN SHERMAN
- 申请人: EDWARD RICHARD MILLAR , SIMS JOHN SHERMAN
- 专利权人: Edward Richard Millar,John Sherman Sims
- 当前专利权人: Edward Richard Millar,John Sherman Sims
- 优先权: US1907394549 1907-09-25
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