Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 4403966 | Children conductive intelligence autosuggestion machine A children's educational device including a user actuable keyboard having a plurality of keys for selecting a drawing or word corresponding to a selected word or drawing on a movable holder and displayed via a display window to achieve an educational or r... | 09/13/1983 |
| 4358273 | Electronic self-study device An electronic self-study device in which problems are randomly generated comprises input keys by means of which a user inputs an answer to a displayed problem, and a review key which is depressed by a user to again display a problem incorrectly answered b... | 11/09/1982 |
| 4355984 | Teaching device A teaching device includes a reading station provided with six on-off switches for automatically sensing a text key encoded as a pattern of punched holes in a text book. The teaching device automatically generates an answer key from the text key by means ... | 10/26/1982 |
| 4340375 | Electronic learning aid An electronic learning aid includes a circuit for automatically developing problems, a display for displaying the problems, an input for introducing a calculated answer, and a determination circuit for detecting whether the introduced answer is correct. T... | 07/20/1982 |
| 4340374 | Electronic learning aid An electronic learning aid is provided with a display, a keyboard and circuits for posing a set of problems at the display and for comparing the operator's responses entered at the keyboard with correct solutions to the problems. A memory is provided for ... | 07/20/1982 |
| 4337047 | Time counter controlled electronic learning aid An electronic learning aid automatically develops and displays problems, and functions to compare an answer introduced by a student with a correct answer stored in the electronic learning aid. A time counter is provided for counting a time period required... | 06/29/1982 |
| 4325081 | Programmed timer for VTR A programmed timer for presetting a video tape recorder for the time and reception channel when the video tape recorder starts and ends, comprising a processor circuit for processing the type of the data entered for reservation in a predetermined order, a... | 04/13/1982 |
| 4320256 | Verbally interactive telephone interrogation system with selectible variable decision tree An improved verbally interactive telephone interrogation system is provided in which a two-way telephone subscriber network, such as a Touch-Tone type two-way telephone subscriber network, is utilized to enable both telephone call placement and individual... | 03/16/1982 |
| 4308017 | Electronic learning aid with picture book A handheld electronic learning aid is disclosed. The learning aid is utilized for teaching and testing associations between pictorial representations and the correct responses to the pictorial representations. A selected one of an associated group of numb... | 12/29/1981 |
| 4303398 | Electronic quiz game utilizing cartridges and method employing same An electronic question-and-answer device includes a keyboard on which codes associated with questions and answers may be entered. The device also includes indicator lights and a sound-generating device for indicating whether the correct answer has been en... | 12/01/1981 |
| 4299580 | Educational object identification game A game mechanism including first and second electrically operated alarms and first and second switches for activating the same. A container for the object and a display of the symbolic equipment of the object in the container are also included. A third sw... | 11/10/1981 |
| 4193210 | Automatic memory trainer An automatic memory-trainer presenting problems to a trainee in a sequence controlled by the trainee's success in answering correctly. The sequence adapts itself to concentrate practice on those facts with which the trainee is having greater difficulty. R... | 03/18/1980 |
| 4179822 | Testing apparatus and method The console adapted to be interconnected to a computer for administering a test in which the questions have plural answers. After selecting a number of answers equal to the number of correct answers to a question, the student is informed of the number of ... | 12/25/1979 |
| 4173832 | Educational toy The invention relates to an educational toy in which a child is taught to read by association of a written word with an image. In operation the toy has a learning phase in which the image and the corresponding word are displayed and a testing phase in whi... | 11/13/1979 |
| 4164078 | Electronic quiz apparatus An electronically operable multiple-choice response evaluating apparatus comprises a housing having a plurality of first input switches which are manually actuable to introduce a code of indicia representative of a question and a plurality of second input... | 08/14/1979 |
| 4118876 | Programmable question and answer device A programmable question and answer device having combined testing and teaching modes with multiple answer set programs. The device is comprised of a plurality of answer keys mounted on a housing, non-volatile, read only memory having a plurality of stored... | 10/10/1978 |
| 4114292 | Match up game A match up game for answering questions from multiple choice answers indicates the correctness of an answer by illuminating a green lamp and indicates the incorrectness of an answer by illuminating a red lamp. The person answering the questions operates a... | 09/19/1978 |
| 4055907 | Character scanned teaching machine A teaching machine wherein an answer provided by a student in the form of a sequence of characters is displayed as each character is correctly indicated in said sequence by the student as determined by a character by character comparison of input characte... | 11/01/1977 |
| 4010556 | Electronic mathematics trainer The specification discloses an electronic mathematics trainer including a problem sheet bearing a plurality of arithmetic problems. An arithmetic problem display holder receives the problem sheet and includes lamps therein for sequentially being illuminat... | 03/08/1977 |
| 3994078 | Educational toy clock with action An educational toy comprises a base and a statue mounted thereon. The statue has movable head and arms. A pair of hands are relatively rotatable about a dial face of a question/answer plate. To each hand is connected a switchboard having a plurality of co... | 11/30/1976 |
| 3993861 | Digital video modulation and demodulation system In a television system, a digital video system permits the transmission of data along with the usual television picture. The television picture field includes one or more selectively addressable areas and the data is imprissed on these areas as digital, b... | 11/23/1976 |
| 3992092 | Microfilm instruction system A microfilm instruction system provides detailed service instructions for diagnosing and repairing complex electronic instrumentation. Troubleshooting procedures are recorded on microfilm along with a series of programmed instructions for directing the se... | 11/16/1976 |
| 3984923 | System and process for preschool screening of children A system for preschool screening of children through a series of question and answer routines presented via an audiovisual console. The console has a slide display of graphic information and an audio instruction to the child typically to select one of a p... | 10/12/1976 |
| 3981087 | Teaching machine A teaching machine adapted to take account of the student's ability and progress operates with programmed cards and includes three stacking means, controlled conveyor means, display means and a student input means, such as a keyboard.... | 09/21/1976 |
| 3953929 | Teaching machines This is a teaching machine in which in a teaching mode, a question and its answer are displayed and the pupil sets the answer for that question into a number of settable memory units. In the examining mode, when the same question is displayed, the pupil s... | 05/04/1976 |
| 3939579 | Interactive audio-visual instruction device This disclosure is for an Audio-Visual training device having both a projectable film tape and an audio tape with control indicia on the audio tape in addition to recorded audio messages. The tape indicia are used to control a small processor which govern... | 02/24/1976 |
