Li Shan Hua

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Ji Lin, CN

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Patents Grantslast 30 patents

Information Patent Grant
Supersonic 4-way self-compensating fluid entrainment device
- Patent number 6,471,489
- Issue date Oct 29, 2002
- Zhuhai Velocity of Sound Technology Ltd.
- Li Shan Hua
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Apparatus for conserving thermal energy in a central heating system
- Patent number 6,427,724
- Issue date Aug 6, 2002
- Zhuhai Velocity of Sound Technology Limited
- Li Shan Hua
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Apparatus for conserving thermal energy in a central heating system
- Patent number 6,371,161
- Issue date Apr 16, 2002
- Zuhai Velocity of Sound Technology Limited
- Li Shan Hua
- F24 - HEATING RANGES VENTILATING