Kin Fai Chang

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Kowloon, HK

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Patents Grantslast 30 patents

Information Patent Grant
Projectile launcher and method of operating the same
- Patent number 9,581,410
- Issue date Feb 28, 2017
- Mattel, Inc.
- Kin Fai Chang
- F41 - WEAPONS
Information Patent Grant
Dual compression spring projectile launcher
- Patent number 9,354,020
- Issue date May 31, 2016
- Mattel, Inc.
- Chun Wing (Edward) Wong
- F41 - WEAPONS
Information Patent Grant
Walking toy
- Patent number 8,956,198
- Issue date Feb 17, 2015
- Mattel, Inc.
- Kin Fai Chang
- A63 - SPORTS GAMES AMUSEMENTS