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Patent applications and USPTO patent grants for Gu; Changgang.The latest application filed is for "thermal print head detecting device and detecting method, and a heat printer using the same".
Patent | Date |
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Thermal print head detecting device and detecting method, and a heat printer using the same Grant 8,497,890 - Gu , et al. July 30, 2 | 2013-07-30 |
Thermal Print Head Detecting Device And Detecting Method, And A Heat Printer Using The Same App 20110242254 - Gu; Changgang ;   et al. | 2011-10-06 |
Paper Cutting Control Device For Ticket Paper And Ticket Dispensing Machine Comprising The Same App 20110204077 - Gu; Changgang ;   et al. | 2011-08-25 |
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