Granted Patent
Utility
US 6,271,939 · App. 09/206,836
Transparent and flatbed scanner
Inventors:
Darwin Hu, Alpha Hou
Patented Case
View Patent ↗
Granted: Aug 7, 2001
Filed: Dec 7, 1998
Inventors
Darwin Hu
Alpha Hou
Assignee (at issue)
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.