Richard Kwok-wah Leung

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Tai Po, HK

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Patents Grantslast 30 patents

Information Patent Grant
Building elements with sonic actuation
- Patent number 8,911,275
- Issue date Dec 16, 2014
- Hasbro, Inc.
- Richard J. Maddocks
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Building Elements with Sonic Actuation
- Publication number 20130316610
- Publication date Nov 28, 2013
- Hasbro, Inc.
- Richard J. Maddocks
- A63 - SPORTS GAMES AMUSEMENTS