| Patents for G09B 19 - Teaching not covered by other main groups of this subclass (16,783) |
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| 02/12/1992 | CN2096102U Multifunctional convenient board for chinese and foreign languages contrast trans-interpretation |
| 02/12/1992 | CN2096101U Double function ac/dc teaching stick |
| 02/05/1992 | CN1058349A Chemical elements 100-m race chess |
| 01/29/1992 | EP0468554A2 An apparatus for ascertaining and measuring the physical efficiency of motor vehicle users as well as their driving capabilities with and without the help of adapters and/or prosthesis |
| 01/29/1992 | CN2094777U Point line plane projection demonstration teaching aid |
| 01/29/1992 | CN1058285A Goldbach number array calculation rule |
| 01/28/1992 | US5084819 Data collection, analysis, and response system and method |
| 01/28/1992 | US5083793 Multiple choices mathematical game apparatus |
| 01/21/1992 | US5082446 Method for the assessment of severe dementia |
| 01/21/1992 | CA1294432C Assembly to demonstrate and teach the game of bridge |
| 01/21/1992 | CA1294431C Multiple dial meter reading development apparatus and method |
| 01/15/1992 | CN1057920A English alphabet playing mahjong (called english mahjong for short) |
| 01/08/1992 | CN2092791U 一种手拨式计数器 A chiral dial counter |
| 01/08/1992 | CN2092790U Counting number equipment for children |
| 01/08/1992 | CN2092789U Subject model for abacus exercises |
| 01/08/1992 | CN2092788U Study tools for teaching |
| 01/08/1992 | CN2092787U Combinatory teaching aid |
| 01/07/1992 | US5079726 Response speed and accuracy measurement device |
| 01/07/1992 | CA1294056C Language translation system |
| 01/01/1992 | CN2092129U Children's learning and game machine with magnetic writing board |
| 01/01/1992 | CN1057540A Soft emulsion art designing teaching pattern, and its manufacturing method and applications |
| 12/31/1991 | US5076793 Fractal mathematics kit |
| 12/27/1991 | EP0462802A1 Method and apparatus for teaching children how to fold clothes and other objects |
| 12/26/1991 | WO1991020068A1 Method for the assessment of severe dementia |
| 12/25/1991 | CN2091478U Denary scale graphic expression board |
| 12/19/1991 | CA2019269A1 Computerized method and system for correcting multiple choice tests |
| 12/18/1991 | CN2091013U Disc with tone and colour corresponding structure |
| 12/18/1991 | CN2091012U Pocket electronic music studying apparatus |
| 12/18/1991 | CN2091005U 乘法计数器 Multiplication counter |
| 12/12/1991 | DE4018080A1 Computer aided foreign language learning system - has memory stored programmes accessed interactively and with acoustic input |
| 12/12/1991 | DE4018079A1 Computer aided learning system e.g. for language - uses modules stored in memory and accessed interactively by user |
| 12/12/1991 | DE4018078A1 Computer aided learning system - operates using memory programmes under control of user and pre-stored memories e.g. for foreign words for language learning |
| 12/11/1991 | EP0460270A1 Color changing print |
| 12/11/1991 | CN2090560U Multifunction counter |
| 12/10/1991 | US5071355 Demonstration device |
| 12/10/1991 | US5071227 Optical filter in the form of a rectangular parallelepiped having a plurality of nonintersecting bevels |
| 12/04/1991 | CN2090088U Multiplication formula equipment |
| 12/04/1991 | CN2090087U Alphabetic learning apparatus for children |
| 11/27/1991 | CN1056594A Imaging processing for instruction of electromechanical product |
| 11/27/1991 | CN1056593A Multifunctional intelligent teaching aids |
| 11/27/1991 | CN1056435A Geographical playing cards |
| 11/20/1991 | CN1056362A Lateral multiplication |
| 11/20/1991 | CN1056257A Mah-jong pieces based on word shape of foreign language |
| 11/13/1991 | CN2088717U Arithmetic performing device |
| 11/13/1991 | CN2088716U Number reading and writing device |
| 11/13/1991 | CN2088715U Learning device on sleeping |
| 11/13/1991 | CN2088485U Baby studying device |
| 11/12/1991 | US5065345 Interactive audiovisual control mechanism |
| 11/06/1991 | CN2088275U Children's intelligent toy-magic stick |
| 11/06/1991 | CN2087979U Intelligence game board |
| 11/06/1991 | CN1055884A International arithmetic chess |
| 11/06/1991 | CN1014656B Ten table toy for assisting children in answering innumerable maths questions |
| 11/06/1991 | CN1014655B Logical reasoning mathematic recreative machine |
| 10/30/1991 | CN2087799U Multifunctional intelligence development device |
| 10/30/1991 | CN2087565U Intelligence card for learning and spelling phonetic letters |
| 10/29/1991 | US5061186 Voice-training apparatus |
| 10/23/1991 | EP0453152A2 Computer program specification system |
| 10/23/1991 | CN2087359U Calculating slip-stick |
| 10/23/1991 | CN1055618A Chinese phonetic cards |
| 10/22/1991 | US5059127 Computerized mastery testing system, a computer administered variable length sequential testing system for making pass/fail decisions |
| 10/16/1991 | CN2086924U Multifunctional teaching aid |
| 10/16/1991 | CN1055438A Pupillary intelligence contest recreation |
| 10/15/1991 | US5056792 Business education model |
| 10/09/1991 | CN2086438U Varied model |
| 10/08/1991 | US5056145 Digital sound data storing device |
| 10/08/1991 | US5055259 Bloodless blood typing training kit |
| 10/08/1991 | US5055053 Computer toy |
| 10/02/1991 | CN2085987U Multipurpose mathematics exercise disc |
| 10/02/1991 | CN1055077A Playing cards with phonetic alphabet |
| 09/19/1991 | WO1991014250A1 Golf scorecard and scoring system method |
| 09/18/1991 | EP0446576A2 Translating apparatus |
| 09/18/1991 | EP0446208A1 Language training. |
| 09/18/1991 | CN2085082U Chemical recreation cards |
| 09/18/1991 | CN2085081U Spelling rotating wheels |
| 09/11/1991 | CN1054499A Serial group cards for learning |
| 09/03/1991 | US5044961 Child activity timer |
| 09/03/1991 | US5044959 Method for diagnosing and treating psychological trauma |
| 08/28/1991 | EP0443817A1 Focussed light source pointer for three dimensional display |
| 08/21/1991 | EP0441864A1 Interactive audiovisual control mechanism |
| 08/21/1991 | CN2083316U Vertical calculator |
| 08/20/1991 | US5040988 Visual mood and cause indicator apparatus and method |
| 08/14/1991 | EP0441547A2 Simulation of human performance of a process operation procedure |
| 08/14/1991 | CN2082883U Chinese phonetic alphabet spelling-reading device |
| 08/14/1991 | CN2082626U Chemical intelligence playing cards for game |
| 08/14/1991 | CN1053853A Intelligent playing cards |
| 08/14/1991 | CN1013523B Applied arithmatical exercise-demonstrating instrument for pupils of primary school |
| 08/13/1991 | US5039603 Educational system for teaching counting and equation solving strategies |
| 08/07/1991 | CN2082441U Language spelling appliance |
| 08/06/1991 | US5037304 Integumentary clothing for stimulating the subconscious reflexive movement of a child's hands |
| 08/06/1991 | US5037302 Educational toy with a repairable defect for teaching humanistic values to a child |
| 07/31/1991 | CN2082005U Tape-type picture and letter teaching machine |
| 07/31/1991 | CN2082004U Speeded-up exercise disk for writing thesis |
| 07/31/1991 | CN2082003U Multipurpose training apparatus for filing surface |
| 07/24/1991 | CN2081553U Arithmetic building blocks |
| 07/23/1991 | US5033968 Method and apparatus for safely and intelligibly directing sound to a fetus |
| 07/23/1991 | US5033963 Color system |
| 07/17/1991 | CN2081118U Mathematics teaching aid for children |
| 07/16/1991 | US5033036 Reproducing apparatus including means for gradually varying a mixing ratio of first and second channel signal in accordance with a voice signal |
| 07/16/1991 | US5032083 Computerized vocational task guidance system |
| 07/10/1991 | CN2080693U Disk with phonetic transcriptions of chinese characters |