Granted Patent
Utility
US 6,828,538 · App. 10/025,484
Illumination detection method for LED printbars
Inventor:
Patrick Y. Maeda
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Dec 26, 2001
Inventor
Patrick Y. Maeda
Assignee (at issue)
Xerox Corporation
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.