Granted Patent
Utility
US 6,802,450 · App. 10/634,540
Guiding a scanning device to decode 2D symbols
Inventors:
Wai Cheung, Zhi-guo Chang, Shillin Ding, Ying-feng Lv
Patented Case
View Patent ↗
Granted: Oct 12, 2004
Filed: Aug 5, 2003
Inventors
Wai Cheung
Zhi-guo Chang
Shillin Ding
Ying-feng Lv
Assignees (at issue)
SHENZHEN SYSCAN TECHNOLOGY CO., LIMITED.
Syscan, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.