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King Ming Ng
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Kwan Chung, HK
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last 30 patents
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Patent Grant
Retractable writing instrument
Patent number
8,029,205
Issue date
Oct 4, 2011
Willtech (PRC) Limited
King Ming Ng
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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last 30 patents
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Patent Application
Retractable Writing Instrument
Publication number
20100143020
Publication date
Jun 10, 2010
King Ming Ng
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES