Assignee

DENG LIFEN

CN·1 granted patent·1 pending application·2 citations·filing 2013–2024

Technology mixB21B1 C21D1 C22C1 E01B1

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2 records

0147USD1093880SBackpackDENG LIFEN·Filed 2024·Granted Sep 23, 2025·2 cites·1 claims
0231US2015028165A1Steel for producing parts for railway, railway crossings and switches and method for producing said partsDENG LIFEN·Filed 2013·Application pending·0 cites

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