发明授权
- 专利标题: Rail and tie plate fastener
- 专利标题(中): 轨道和连接板紧固件
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申请号: US28156828申请日: 1928-05-29
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公开(公告)号: US1752450A公开(公告)日: 1930-04-01
- 发明人: MULLER GEORGE W
- 申请人: MULLER RAILWAY TRACK SYSTEMS I
- 专利权人: Muller Railway Track Systems I
- 当前专利权人: Muller Railway Track Systems I
- 优先权: US28156828 1928-05-29
- 主分类号: E01B9/46
- IPC分类号: E01B9/46