TongSheng Tao

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Hefei, CN

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Patents Grantslast 30 patents

Information Patent Grant
Vacuum preservation device
- Patent number 10,906,721
- Issue date Feb 2, 2021
- Whirlpool Corporation
- An Liu
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
VACUUM PRESERVATION DEVICE
- Publication number 20210139221
- Publication date May 13, 2021
- Whirlpool (China) Co., Ltd.
- An Liu
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
VACUUM PRESERVATION DEVICE
- Publication number 20200047973
- Publication date Feb 13, 2020
- Whirlpool (China) Co., Ltd.
- An Liu
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL