Unicorn Image Products Co. Ltd. of Zhuhai
Patent Applications and Registrations
Patent applications and USPTO patent grants for Unicorn Image Products Co. Ltd. of Zhuhai.The latest application filed is for "one-way valve, valve unit assembly, and ink cartridge using the same".
- Unicorn Image Products Co. Ltd. of Zhuhai - Zhuhai CN
- UNICORN IMAGE PRODUCTS CO. LTD. OF ZHUHAI -
| Patent | Date |
|---|---|
| One-way valve, valve unit assembly, and ink cartridge using the same Grant 7,475,972 - Qingguo , et al. January 13, 2 | 2009-01-13 |
| One-way valve, valve unit assembly, and ink cartridge using the same Grant 6,935,730 - Qingguo , et al. August 30, 2 | 2005-08-30 |
| One-way valve, valve unit assembly, and ink cartridge using the same App 20030048338 - Qingguo, Xiao ; et al. | 2003-03-13 |
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