Patents/Inventors

Yanhua Qiao

TaiyuanCN4 patents

3 Patents

US125905402026
Bolter Miner and Tunneling System
Shanxi Tiandi Coal Mining Machinery Co., Ltd.
0 cites
US125658372026
Tunnel Tunneling System
SHANXI TIANDI COAL MINING MACHINERY CO., Ltd.
0 cites
US124422982025
Bolter Miner and Tunneling System
SHANXI TIANDI COAL MINING MACHINERY CO., Ltd.
0 cites