Patents
Sitemap › G09 - Educating; Cryptography; Display; Advertising; Seals › G09B - Educational or demonstration appliances; Appliances for teaching, or communicating with, the blind, deaf or mute; Models; Planetaria; Globes; Maps; Diagrams › G09B 3 - Manually- or mechanically-operated teaching appliances working with questions and answers
Patents for G09B 3 - Manually- or mechanically-operated teaching appliances working with questions and answers (1,613)
11/1992
11/03/1992US5160267 Programmed learning device
11/03/1992US5160266 Mix and match invisible ink game
10/1992
10/29/1992DE4113520A1 Self-teaching device - consists of board with coloured counters, with colour of counter corresp. to number
10/13/1992US5154616 Answer sheet covering device
09/1992
09/16/1992CN2116258U Learning device for beginner
09/08/1992US5145376 Teaching aid for foreign language
09/02/1992CN2114865U Multi-purpose teaching aid for test training
09/02/1992CN2114864U Examination paper reading machine
08/1992
08/25/1992US5141439 Keyword teaching and testing method
08/18/1992US5139572 Reusable hidden indicia printed sheet
08/05/1992EP0496908A1 Self-teaching, self-checking educational arrangement
04/1992
04/22/1992CN2102550U Multifunctional child knowledge electronic answering teaching instrument
04/15/1992EP0479990A1 Game for learning multiplication tables.
04/07/1992US5102341 Test answer and score sheet device
03/1992
03/18/1992CN2099355U Convenient answering rule
02/1992
02/12/1992CN2096096U Intelligent study tool
12/1991
12/18/1991CN2091011U Teaching aid for context key word index
12/11/1991EP0460270A1 Color changing print
12/10/1991US5072385 Method for gathering and classifying items of information
12/04/1991EP0458928A1 Pocket chart for localizing lesions of the peripheral nervous system
11/1991
11/28/1991WO1991018376A1 Processes and products for generating documents with inherent confidentiality
11/27/1991CN2089647U Cross-extension demonstration device for historic knowledge
11/19/1991US5066234 Educational toy and method therefor
11/14/1991WO1991017534A1 Game for learning multiplication tables
10/1991
10/23/1991CN2087369U Alter card of answer examination paper for the use of machine reading
09/1991
09/18/1991CN1013949B Writing method and medium for unable rewriting and its use
07/1991
07/31/1991EP0438608A1 Representing utensil
07/11/1991DE4039548A1 Question and answer studying pad
07/03/1991CN2080198U Chemical studying disk for middle school
06/1991
06/26/1991EP0433847A2 Device for differentiation training
06/21/1991WO1991008702A1 Pocket chart for localizing lesions of the peripheral nervous system
06/21/1991CA2046612A1 Pocket chart for localizing lesions of the peripheral nervous system
06/15/1991CA2032095A1 Studying tool
06/12/1991CN2078905U Eyesight memory
05/1991
05/29/1991CN2078029U Combinative type model table of standardization examining problems
05/28/1991US5018976 Teaching system for enhancing the learning of sets of facts
05/15/1991CN2077144U Multitime stuffing chart
05/08/1991CN2076696U Screen display apparatus for studying chinese phonetic alphabet
04/1991
04/24/1991CN2075804U Model card for standard exam paper
04/17/1991CN2075367U Answer qustion modle plate for standardization examination
03/1991
03/20/1991CN2073607U Belt type of tool of child learning to read with reciprocal duplex window
02/1991
02/27/1991CN2072255U Conveying stand of subtitle tape for teaching
01/1991
01/17/1991DE4013932A1 Learning aid consisting of two parts folded together - with question written on outside and answer written on inside
12/1990
12/27/1990EP0403903A2 Print with colour-forming area
12/12/1990CN2067435U Single-hand used type foreign word memory aid box
11/1990
11/28/1990EP0399229A1 Recording game
11/20/1990US4971561 Apparatus and method for learning about the relationships and personalities of a group of two or more persons
11/15/1990DE3915449A1 Mechanical language-teaching aid - has plates with three or more rotating evaluation templates
11/13/1990CA1276204C Bound book with bound holder carrying loose-leaf pages
11/06/1990US4968258 Reusable learning aid
10/1990
10/24/1990CN2064523U Rolled tape study machines
08/1990
08/29/1990CN2061314U Interesting combined demonstrating device for teaching children
08/21/1990US4950167 Visual detail perception test kit and methods of use
08/08/1990CN2060246U Intelligence developing unit for child mathematics
07/1990
07/24/1990US4943239 Test answer and score sheet device
07/24/1990US4943054 Mental game
07/11/1990EP0377396A1 Mental game
07/04/1990CA2005177A1 Mental game
06/1990
06/12/1990US4932681 Recording medium
05/1990
05/03/1990WO1990004840A1 A portable 5-stage learning system for senior and adult training
04/1990
04/25/1990CN2056533U Mechanical calculator
03/1990
03/22/1990DE3830944A1 Device for checking whether written and/or pictorial aids can be matched to corresponding tasks to see whether the educational goal has been mastered
03/13/1990US4907903 Representing utensil
02/1990
02/27/1990US4903990 Problem sheet for self-evaluated mathematics examination
02/07/1990CN2052559U Double-display english works memory
01/1990
01/31/1990EP0352266A1 Improvements in and relating to picture cards
01/17/1990EP0250398B1 Process for irreversible recording, recording support and use of the process or of the recording support
12/1989
12/20/1989CN2049801U Apparatus for going over standard examination papers
12/06/1989CN2049007U Magic disk of language
11/1989
11/15/1989CN2047817U Memory assistance device of words and phrases
11/15/1989CN2047816U Word combination device of foreign language
10/1989
10/25/1989CN1036530A Recording medium
10/03/1989US4871193 Process for irreversible recording, recording carrier, as well as use of the process or of the recording carrier
09/1989
09/26/1989CA1260513A1 Process for irreversible recording, a recording medium, and the use of the process or of the recording medium
08/1989
08/30/1989EP0330042A1 Recording support
08/23/1989CN2043397U Paper marking board
08/16/1989CN2042986U Studying device for chinese and foreign word
08/02/1989CN2042224U Box-type quick-remembered newwork card
06/1989
06/28/1989EP0322268A1 Method and device for information retrieval and their application
03/1989
03/29/1989CN2035125U "ten-one" fast mathematic teaching tool for game
03/28/1989US4815976 Apparatus and method for learning about the relationships and personalities of a group of two or more persons
03/28/1989US4815766 Re-usable test booklet
03/14/1989US4811973 Bound book with bound holder carrying loose-leaf pages
12/1988
12/07/1988CN87103674A Writing method and medium for unable rewriting and its use
12/06/1988CA1246001A1 Cryoelectrodeposition
11/1988
11/29/1988US4787852 Multicolor interactive notepad
11/01/1988US4781599 Method of collecting and recording answers to survey questions on a census directory
11/01/1988US4781598 Instructional apparatus
10/1988
10/26/1988CN87216080U English-chinese bilingual fast-memory plate
10/12/1988CN87212692U Diagram for rapidly solving physics problems
10/06/1988WO1988007452A1 Improvements in and relating to picture cards
09/1988
09/13/1988US4770638 Educational aid having an answer concealing element
08/1988
08/25/1988DE3704805A1 Device for playing and learning
07/1988
07/19/1988US4758021 Booklet of folded web construction and method of manufacture
05/1988
05/04/1988CN87211683U Reviewing instrument for studing
04/1988
04/20/1988EP0264295A2 Educational teaching toy
04/13/1988CN87210548U Alarm for guarding against theft with function of recognizable host
03/1988
03/15/1988US4731027 Educational teaching toy
03/15/1988CA1233982A1 Educational device
03/01/1988US4728294 Educational-teaching device
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