Granted Patent
Utility
US 6,169,622 · App. 09/187,199
Optical scanner with a distance adjusting device
Inventors:
Jern-Tsair Tsai, Bill Chen
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Nov 3, 1998
Inventors
Jern-Tsair Tsai
Bill Chen
Assignee (at issue)
Mustek 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.