Beijing
China
3
2025-05-29
The entities that hold a legal rights for patent applications filed by inventor REN Junhao:
Junhao REN from Beijing, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
COAL MINING SYSTEM AND METHOD OF DUAL CIRCULATION DRILLING WITH MECHANICAL REAMING AND ABRASIVE JET
#2 | 2025-03-04Coal and coalbed methane mining system based on ground drilling, method and related device
#3 | 2025-03-04Integrated mining method of coal breaking, coal extraction and water circulation in U-well and system thereof
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