Granted Patent
Utility
US 6,052,606 · App. 08/989,463
Reversible keypad and display for a telephone handset
Inventor:
Ronald A. Bowen
Patented Case
View Patent ↗
Granted: Apr 18, 2000
Filed: Dec 12, 1997
Inventor
Ronald A. Bowen
Assignee (at issue)
LOCKHEED MARTIN 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.