Granted Patent
Utility
US 4,669,901 · App. 06/772,009
Keyboard device for inputting oriental characters by touch
Inventor:
I-Ming Feng
Patented Case
View Patent ↗
Granted: Jun 2, 1987
Filed: Sep 3, 1985
Inventor
I-Ming Feng
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.