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ELTON YU MAN LEUNG
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HONG KONG, CN
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last 30 patents
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Patent Grant
Musical teether
Patent number
10,507,168
Issue date
Dec 17, 2019
KAR KOI LEUNG
Kar Koi Leung
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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last 30 patents
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Patent Application
MUSICAL TEETHER
Publication number
20170304155
Publication date
Oct 26, 2017
KAR KOI LEUNG
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE