Chin-Hung Cheng

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Chino, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Active cigarette lighter adapter plug
- Patent number D719916
- Issue date Dec 23, 2014
- Sky Tech Worldwide, Inc.
- Chin-Hung Cheng
- D13 - Equipment for production, distribution, or transformation of energy
Information Patent Grant
Bluetooth speaker
- Patent number D719137
- Issue date Dec 9, 2014
- Sky Tech Worldwide, Inc.
- Chin-Hung Cheng
- D14 - Recording, communication, or information retrieval equipment
Information Patent Grant
Active cigarette lighter adapter plug
- Patent number D697482
- Issue date Jan 14, 2014
- Sky Tech Worldwide, Inc.
- Chin-Hung Cheng
- D13 - Equipment for production, distribution, or transformation of energy