ZHANG, Yansan
China
| Create a watch for ZHANG, Yansan | |
| Total IP | 1 |
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| Total IP Rank # | 1,293,778 |
| IP Activity Score | 0/5.0 0 |
| IP Activity Rank # | 1,706,134 |
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| Last Patent | 2010 - Improved structure of safe lighter | |||||||||||||||
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| First Patent | 2009 - Improved structure of safe lighter | |||||||||||||||
Latest Inventions, Goods, Services
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