发明授权
- 专利标题: Railway-signal.
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申请号: US1907399338申请日: 1907-10-26
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公开(公告)号: US908340A公开(公告)日: 1908-12-29
- 发明人: SHINGLETON JAMES A , ROBERTS CHARLES H
- 申请人: SHINGLETON JAMES A , ROBERTS CHARLES H
- 专利权人: James A Shingleton,Charles H Roberts
- 当前专利权人: James A Shingleton,Charles H Roberts
- 优先权: US1907399338 1907-10-26
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