Granted Patent
Utility
US 6,744,538 · App. 09/725,811
Scanner of variable scanning speeds
Inventor:
Chih-Ming Chen
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Nov 30, 2000
Inventor
Chih-Ming Chen
Assignee (at issue)
BenQ 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.