Changgang Gu

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Weihai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Thermal print head detecting device and detecting method, and a hea...
- Patent number 8,497,890
- Issue date Jul 30, 2013
- Shandong New Beiyang Information Technology Co., Ltd
- Changgang Gu
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
THERMAL PRINT HEAD DETECTING DEVICE AND DETECTING METHOD, AND A HEA...
- Publication number 20110242254
- Publication date Oct 6, 2011
- Changgang Gu
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
PAPER CUTTING CONTROL DEVICE FOR TICKET PAPER AND TICKET DISPENSING...
- Publication number 20110204077
- Publication date Aug 25, 2011
- Changgang Gu
- G07 - CHECKING-DEVICES