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Jun-Zhong Wu
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Guangdoon, CN
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Patents Grants
last 30 patents
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Patent Grant
Separate light-emitting ink cartridge
Patent number
7,891,770
Issue date
Feb 22, 2011
Jun-Zhong Wu
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Patents Applications
last 30 patents
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Patent Application
Separate Light-Emitting Ink Cartridge
Publication number
20090135234
Publication date
May 28, 2009
Jun-Zhong Wu
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS