Assignee
CHINA RAILWAY BEIJING ENG GROUP CO LTD
CN·1 granted patent·1 pending application·0 citations·filing 2021–2021
Top patents by PatentIndex Score
2 records- 0144US2022228323A1Construction process for quickly and integrally replacing damaged pavement slab without suspending flights of civil aviationCHINA RAILWAY BEIJING ENG GROUP CO LTD·Filed 2021·Application pending·0 cites
- 0239US11674392B2Split air cabin ventilation system for construction of tunnel inclined shaft and ventilation method using sameCHINA RAILWAY BEIJING ENG GROUP CO LTD·Filed 2021·Granted Jun 13, 2023·0 cites·8 claims
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