IP Library Granted Patent US 4,669,901
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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,669,901
App. No.
06/772,009
Filed
1985-09-03
Granted
1987-06-02
Kind
A