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Inventors
Xinrong Zhang
Qingdao
CN
2 patents
3 Patents
US12203374
2025
System for Monitoring Overlying Roof Rock and Coal Pillar of Gob-side Entry and Method Thereof
0 cites
USD1017964
2024
Swaddle Transition Bag
0 cites
USD0983488
2023
Swaddle Sack
0 cites