发明授权
- 专利标题: Metallic railway-tie.
-
申请号: US1911626446申请日: 1911-05-11
-
公开(公告)号: US1001327A公开(公告)日: 1911-08-22
- 发明人: WHITE JOSEPH J
- 申请人: WHITE JOSEPH J
- 专利权人: Joseph J White
- 当前专利权人: Joseph J White
- 优先权: US1911626446 1911-05-11