Granted Patent
Utility
US 6,597,441 · App. 09/256,581
Apparatus and method for calibrating reflective lens
Inventors:
Jenn-Tsair Tsai, Chieng-Ming Tsaur
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Feb 24, 1999
Inventors
Jenn-Tsair Tsai
Chieng-Ming Tsaur
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.