Autonomous computer input device and marking instrument
Patent 5247137 Issued on September 21, 1993. Estimated Expiration Date: 
October 25, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 25, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesPen-type character recognition apparatus Graphic input system Patent #: 4777329 InventorApplicationNo. 782615 filed on 10/25/1991US Classes:178/19.04, Pressure stylus706/20Classification or recognitionExaminersPrimary: Kuntz, CurtisAssistant: Loomis, Paul International ClassG08C 021/00AbstractAn autonomous input device which enables the user to capture and store handwritten text and graphics in a precisely controllable manner for subsequent transmission to a computer in a computer readable format. This input device may look and feel like an ordinary writing pen and can function as a writing instrument while it captures that which is written with it. Further, this pen input device has the capability of sensing the absolute location of the pen tip, as opposed to other input devices such as computer mice, which sense relative locations only. | |
