Teaching machine apparatus
Patent 4253248 Issued on March 3, 1981. Estimated Expiration Date: 
April 16, 1999. 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.
April 16, 1999. 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 References 3121960 3281959 3477142 3680224 3869810 3894346 Training machine for keyboards Patent #: 4044475 InventorApplicationNo. 06/030575 filed on 04/16/1979US Classes:434/227, Keyboard operation (e.g., typing, key punching, etc.)434/178ReadingExaminersPrimary: Hart, Charles N.Assistant: Sadowski, David R. Attorney, Agent or FirmInternational ClassesG09B 17/00 (20060101)G09B 5/02 (20060101) G09B 5/00 (20060101) AbstractPrinted matter is positioned behind a reflective and transparent surface. A lamp illuminates the printing. A student is instructed to copy the material on a typewriter. When a student begins typing, the lamp turns off and remains off until a predetermined interval after typing has stopped. The lamp relights, displaying the printed matter through the printed matter screen and when the student begins typing again the lamp turns off, hiding the printed matter. The process is repeated until the task is completed or a preselected time expires.The student is encouraged to type more during each successive interval, which encourages the student to remember words and groups of words and to comprehend. | |
