Granted Patent
Utility
US 5,986,254 · App. 09/292,482
Multi-lenses optical device
Inventor:
Jenn-Tsair Tsai
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Apr 15, 1999
Inventor
Jenn-Tsair Tsai
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.