发明授权
- 专利标题: Rail tie and fastener.
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申请号: US1911601691申请日: 1911-01-09
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公开(公告)号: US988408A公开(公告)日: 1911-04-04
- 发明人: THOMAS WILLIAM HENRY , THOMPSON RICHARD CHALMERS
- 申请人: THOMAS WILLIAM HENRY , THOMPSON RICHARD CHALMERS
- 专利权人: William Henry Thomas,Richard Chalmers Thompson
- 当前专利权人: William Henry Thomas,Richard Chalmers Thompson
- 优先权: US1911601691 1911-01-09