| Patents for G09B 3 - Manually- or mechanically-operated teaching appliances working with questions and answers (1,613) |
|---|
| 01/27/1988 | CN87205969U One hundred second coercive memory device |
| 01/07/1988 | EP0250398A1 Process for irreversible recording, recording support and use of the process or of the recording support. |
| 12/26/1987 | CN87203083U High efficient mnemonical device with a left hand |
| 11/04/1987 | CN87201867U Toy teaching aid for intelligence test |
| 09/30/1987 | EP0239314A2 Bound book with bound holder carrying loose-leaf pages |
| 09/22/1987 | US4694597 Electric perpetual calendar |
| 09/15/1987 | US4693694 Toy with moving screen |
| 09/03/1987 | DE3605733A1 Apparatus with a questionnaire and an analysis template which can be laid thereon to facilitate educational, learning and/or examination procedures |
| 07/02/1987 | WO1987003990A1 Process for irreversible recording, recording support and use of the process or of the recording support |
| 06/23/1987 | US4674433 Correct answer displaying device for arithmetic practicing unit |
| 04/02/1987 | DE3630219A1 Information medium |
| 03/24/1987 | CA1219438A1 Simulation system trainer |
| 03/17/1987 | US4650426 Skill evaluating apparatus and method |
| 01/06/1987 | US4634385 Teaching wheels |
| 12/17/1986 | EP0204858A1 Apparatus and method for cloze-elide testing |
| 12/09/1986 | US4627819 Teaching or amusement apparatus |
| 09/10/1986 | EP0099920B1 Teaching or amusement apparatus |
| 08/20/1986 | EP0191241A2 Booklet of folded web construction and method of manufacture |
| 04/22/1986 | US4583951 Roll-type learning aid apparatus for reading and memorizing |
| 03/04/1986 | US4573928 Teaching toy |
| 02/25/1986 | CA1200977A1 Information gathering system |
| 01/15/1986 | EP0168248A2 A programmed learning text |
| 12/17/1985 | US4558865 Knowledge game apparatus and method and card caddy therefor |
| 11/12/1985 | US4552536 Programmed learning textbook |
| 10/15/1985 | US4547161 Apparatus and method for Cloze-Elide testing |
| 10/01/1985 | US4544360 Book reference list |
| 04/30/1985 | US4514177 Invisible ink quiz game |
| 02/19/1985 | CA1182635A1 Teaching or amusement apparatus |
| 01/23/1985 | EP0132085A2 Book reference list |
| 01/15/1985 | US4493654 Educational device |
| 12/11/1984 | US4487430 Fold and hold answer book |
| 11/13/1984 | US4482329 Teaching toy |
| 10/23/1984 | US4478584 Method for recording uncoded scores or ratings by multiple evaluators on a single automatic machine scannable document |
| 09/25/1984 | US4472892 Perpetual cubic calendar |
| 09/11/1984 | CA1174362A1 Automatic banking equipment |
| 05/22/1984 | US4449943 Teacher prepared formats for instructional apparatus |
| 04/24/1984 | US4444391 Teaching toy with stop action |
| 03/20/1984 | US4437838 Apparatus for preparing examinations |
| 03/20/1984 | CA1163799A1 Management teaching game apparatus and method |
| 02/08/1984 | EP0099920A1 Teaching or amusement apparatus. |
| 01/31/1984 | US4428733 Information gathering system |
| 11/08/1983 | CA1156453A1 Diagnostic memory skill game and method |
| 09/13/1983 | US4403967 Self teaching instrument |
| 09/13/1983 | US4403966 Children conductive intelligence autosuggestion machine |
| 08/18/1983 | WO1983002842A1 Teaching or amusement apparatus |
| 04/06/1983 | EP0075934A1 Clay capable of changing colour and method for its production |
| 03/22/1983 | US4377383 Teaching apparatus with system for repetitive review of information |
| 02/08/1983 | US4372559 Educational game for student and/or graduate nurses |
| 08/03/1982 | CA1128748A1 Educational toy |
| 06/29/1982 | US4337051 Self-scoring test with non-disclosed key |
| 02/03/1982 | EP0044839A1 Device and method for producing examination sheets |
| 12/22/1981 | CA1114602A1 Teaching aid for mathematics |
| 11/17/1981 | US4300791 Optically scannable answer sheet booklet with sequence bars printed thereon and method of producing same |
| 10/07/1981 | EP0037270A1 Language translation device |
| 08/06/1981 | WO1981002213A1 Device and method for producing examination sheets |
| 08/04/1981 | US4282592 Indicating member advancing mechanism |
| 04/21/1981 | US4262432 Study device |
| 03/31/1981 | US4258477 Multiplication study device |
| 02/17/1981 | US4250633 Educational machine |
| 02/03/1981 | US4247995 Language teaching method and apparatus |
| 01/27/1981 | CA1094315A1 Method and apparatus for determining the result of answers to a set of related questions |
| 01/21/1981 | EP0022760A1 Self corrector for multiple-choice questionnaire |
| 01/13/1981 | US4244577 Diagnostic memory skill game and method |
| 10/14/1980 | US4227930 Ball point pen, ink, and its eradicator system |
| 08/19/1980 | US4218077 Constant reminder memorandum device |
| 07/22/1980 | US4213251 Apparatus for determining the result of answers to a set of related questions |
| 07/15/1980 | US4212118 System of interactive blocks |
| 04/15/1980 | US4198445 Latent image printing and development |
| 03/18/1980 | CA1073666A1 Permanent visual progression form or book |
| 03/04/1980 | CA1072833A1 Latent image printing and development |
| 02/19/1980 | US4188734 Educational toy |
| 02/12/1980 | US4188431 Phenolphthalein invisible inks, reusable paper feedback systems |
| 01/08/1980 | US4182052 Educational toy |
| 01/08/1980 | US4182051 Entertainment and/or educational device |
| 12/11/1979 | US4177578 Multi-page problem and answer workbook |
| 11/27/1979 | US4175339 Diagnostic skills test |
| 11/13/1979 | US4173833 PsychologicaL game |
| 09/11/1979 | US4167069 Device for assisting the marking of tests |
| 09/04/1979 | US4166326 Educational teaching aid |
| 07/17/1979 | CA1058400A1 Educational teaching aid |
| 05/29/1979 | US4156315 Modular educational response unit |
| 04/04/1979 | EP0001338A1 Apparatus for determining the result of answers to a set of related questions |
| 03/13/1979 | US4143473 Memorizing aid |
| 01/09/1979 | CA1045814A1 Manually operated teaching device |
| 11/28/1978 | US4126950 Teaching appliances for programmed teaching |
| 10/10/1978 | US4118877 Educational toy |
| 06/20/1978 | US4095824 Secure contest card |
| 05/16/1978 | US4089125 Color-assist teaching aid and method therefor |
| 04/18/1978 | US4084332 Dyes, activators, solvents on substrate |
| 02/21/1978 | US4074445 Method and apparatus for constructing and grading objective examinations |
| 01/03/1978 | US4065858 Instructional apparatus with elastic sheet |
| 10/18/1977 | US4053994 Educational device |
| 09/20/1977 | US4049265 Question and answer game |
| 08/02/1977 | US4038761 Element and method for teaching with liquid crystals |
| 07/19/1977 | US4035932 Educational game |
| 07/05/1977 | US4033051 Educational toy |
| 06/28/1977 | US4031636 Card grading system |
| 06/07/1977 | US4027402 Novel educational toy |
| 05/24/1977 | US4024650 Educational toy |
| 05/10/1977 | US4021940 Educational device |