Lei YAN

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Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Premixed ventilated henhouse
- Patent number 11,191,255
- Issue date Dec 7, 2021
- New Hope Liuhe Feed Co., Ltd.
- Changwu Li
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Premixed underground ventilated henhouse
- Patent number 11,147,244
- Issue date Oct 19, 2021
- New Hope Liuhe Feed Co., Ltd.
- Changwu Li
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING

Patents Applicationslast 30 patents

Information Patent Application
PREMIXED UNDERGROUND VENTILATED HENHOUSE
- Publication number 20190150407
- Publication date May 23, 2019
- New Hope Liuhe Feed Co., Ltd.
- Changwu LI
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Application
PREMIXED VENTILATED HENHOUSE
- Publication number 20190141960
- Publication date May 16, 2019
- New Hope Liuhe Feed Co., Ltd.
- Changwu LI
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING