Chan K. Leung

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Kowloon, HK

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Patents Grantslast 30 patents

Information Patent Grant
Top and sides of a toy train track
- Patent number D297747
- Issue date Sep 20, 1988
- Blue Box Toy Factory Limited
- Chan K. Leung
- D21 - Games, toys, and sports goods
Information Patent Grant
Toy locomotive
- Patent number D289537
- Issue date Apr 28, 1987
- Blue Box Toy Factory Limited
- Chan K. Leung
- D21 - Games, toys, and sports goods