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Chin Kau Au
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Hong Kong, HK
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Patents Grants
last 30 patents
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Patent Grant
Elevator of a plane
Patent number
D610066
Issue date
Feb 16, 2010
Silverlit Toys Manufactory Ltd.
Chin Kau Au
D12 - Transportation
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Patent Grant
Plane
Patent number
D583295
Issue date
Dec 23, 2008
Silverlit Toys Manufactory Ltd.
Chin Kau Au
D12 - Transportation