The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2000
Filed:
Dec. 12, 1997
Ronald A Bowen, Sterling, VA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
In cellular telephone handset having an upper casing and a lower casing, liquid crystal display screens with touch sensitive overlays are provided on each casing. In one mode of operation, the screen on the lower casing will display a telephone keypad and the telephone handset will respond to the touching of the keys from the telephone keypad to dial telephone numbers and will display information on the screen on the upper casing. In a second mode of operation, the screen on the upper casing will display function keys and the telephone handset will respond to the touching of the function keys and will display information on the screen on the lower casing.