Changyan PU

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Langfang, Hebei, CN

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Patents Grantslast 30 patents

Information Patent Grant
Six-arm tunneling and anchoring machine for integrating tunneling a...
- Patent number 11,619,131
- Issue date Apr 4, 2023
- LANG FANG JING LONG GRAND INDUSTRIAL MACHINERY CO., LTD.
- Changyan Pu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Auxiliary transportation and support system used after rapid excava...
- Patent number 11,459,888
- Issue date Oct 4, 2022
- LANG FANG JING LONG GRAND INDUSTRIAL MACHINERY CO., LTD.
- Changyan Pu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Process and device for supporting anchor bolt and anchor cable on s...
- Patent number 11,208,888
- Issue date Dec 28, 2021
- LANG FANG JING LONG GRAND INDUSTRIAL MACHINERY CO., LTD.
- Changyan Pu
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Six-Arm Tunneling and Anchoring Machine for Integrating Tunneling a...
- Publication number 20220090498
- Publication date Mar 24, 2022
- LANG FANG JING LONG GRAND INDUSTRIAL MACHINERY CO., LTD.
- Changyan PU
- E21 - EARTH DRILLING MINING
Information Patent Application
PROCESS AND DEVICE FOR SUPPORTING ANCHOR BOLT AND ANCHOR CABLE ON S...
- Publication number 20210180453
- Publication date Jun 17, 2021
- LANG FANG JING LONG GRAND INDUSTRIAL MACHINERY CO., LTD.
- Changyan PU
- E21 - EARTH DRILLING MINING
Information Patent Application
Auxiliary Transportation and Support System Used after Rapid Excava...
- Publication number 20200208519
- Publication date Jul 2, 2020
- LANG FANG JING LONG GRAND INDUSTRIAL MACHINERY CO., LTD.
- Changyan PU
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL