Assignee
CHINA RAILWAY FIRST GROUP CO
CN·2 granted patents·0 citations·filing 2024–2025
Top patents by PatentIndex Score
2 records- 0146US12392092B1Device and construction method for automatically placing high-speed railway steel rail laying tie plateCHINA RAILWAY FIRST GROUP CO·Filed 2025·Granted Aug 19, 2025·0 cites·12 claims
- 0245US12110639B1Rail temperature expansion joint and laying and mounting methodCHINA RAILWAY FIRST GROUP CO·Filed 2024·Granted Oct 8, 2024·0 cites·15 claims
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