Granted Patent
Utility
US 6,587,247 · App. 09/921,949
Optical lens of optical scanner
Inventor:
Chih-Wen Huang
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Aug 3, 2001
Inventor
Chih-Wen Huang
Assignee (at issue)
Umax Data Systems, 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.