Apparatus and method for rail head improvement
US10519610B2 · kind B2 · utility
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2References
4Claims
0Family size
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Key dates
| Filing date | Aug 29, 2017 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Feb 2, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B11/44
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A railroad rail comprising a rail head, wherein the rail head is made from a first material and defines a void, and an insert comprising a second material installed in the void.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.