| Patents for G09B 21 - Teaching, or communicating with, the blind, deaf or mute (3,530) | 
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| 04/20/1993 | US5203704 Method of communication in a language by a sender and a receiver | 
| 04/20/1993 | CA1316347C Tactile relief display device and method for manufacturing it | 
| 04/14/1993 | EP0536300A1 Testing and treatment of visual dysfunctions | 
| 04/07/1993 | EP0535510A1 Electromechanical transducer | 
| 03/31/1993 | EP0534410A2 Method and apparatus for hearing assistance with speech speed control function | 
| 03/24/1993 | EP0533055A1 Communication apparatus for hearing or speech handicapped person | 
| 03/23/1993 | US5195894 Braille mouse having character code member actuated by single solenoid | 
| 03/03/1993 | EP0529586A2 Braille reading display terminal device | 
| 03/02/1993 | US5191411 Laser driven optical communication apparatus | 
| 02/24/1993 | EP0528743A1 Audio user interface with stereo and filtered sound effects for visually impaired users | 
| 02/18/1993 | WO1993003468A1 Method and devices of communication by the sense of touch | 
| 02/16/1993 | US5186629 Virtual graphics display capable of presenting icons and windows to the blind computer user and method | 
| 02/10/1993 | CN1068904A Chinese character writing way for blind or dumb person | 
| 02/09/1993 | US5185515 Automated teller machine and method thereof | 
| 02/03/1993 | EP0525922A2 Method and apparatus for braille display of information from CRT screen | 
| 01/21/1993 | WO1993001589A1 Communication test system | 
| 01/21/1993 | DE4123465A1 Text-to-speech converter using optical character recognition - reads scanned text into memory for reproduction by loudspeaker or on video screen at discretion of user | 
| 01/21/1993 | CA2112254A1 Communication test system | 
| 01/05/1993 | US5177800 Bar code activated speech synthesizer teaching device | 
| 12/29/1992 | CA1312136C Signal processor for and an auditory prosthesis having spectral to temporal transformation | 
| 12/10/1992 | WO1992021519A1 Keyboard | 
| 12/08/1992 | US5169342 Method of communicating with a language deficient patient | 
| 12/08/1992 | CA1311290C Signal processor for and an auditory prosthesis utilizing channel dominance | 
| 12/03/1992 | DE4117694A1 Musical therapy device for disabled - uses sound box with loudspeaker in its top surface | 
| 11/24/1992 | US5165897 Programmable tactile stimulator array system and method of operation | 
| 11/10/1992 | US5161975 Braille teaching apparatus | 
| 11/10/1992 | CA1310070C Vocal tactile feedback method and associated apparatus | 
| 11/03/1992 | CA1309760C Display surface for tactile information | 
| 10/29/1992 | WO1992018925A1 Haptic computer output device | 
| 10/20/1992 | US5157759 Converter for synthesizing a speech signal | 
| 10/15/1992 | WO1992017991A1 Inconspicuous communication method utilizing remote electromagnetic drive | 
| 10/13/1992 | US5154614 Sound output electronic apparatus | 
| 10/07/1992 | EP0506713A1 Device for classifying bank notes and the like. | 
| 10/06/1992 | US5152690 Trilingual educational block | 
| 10/02/1992 | CA2106459A1 Inconspicuous communication method utilizing remote electromagnetic drive | 
| 09/24/1992 | DE4109138A1 Input keyboard for use by blind person - uses braille inputs with decoding by microprocessor to control signal generator | 
| 09/08/1992 | US5146502 Speech pattern correction device for deaf and voice-impaired | 
| 09/08/1992 | US5145377 Color-coded training method | 
| 09/03/1992 | WO1992015079A1 Device for producing modifiable surface patterns | 
| 09/01/1992 | CA1306863C Braille teaching apparatus | 
| 07/29/1992 | EP0496492A1 Control apparatus for electronic equipment | 
| 07/28/1992 | US5133664 Manual braille writer | 
| 07/23/1992 | WO1992012491A1 System and method for automatically selecting among a plurality of input modes | 
| 07/22/1992 | CN1063009A Communication device for transmitting audio information to user | 
| 06/23/1992 | US5125046 Digitally enhanced imager for the visually impaired | 
| 06/22/1992 | WO1992011619A1 Pointing gesture method of communication | 
| 06/17/1992 | EP0489792A1 One-handed keyboard. | 
| 06/16/1992 | CA1303749C Working station comprising a braille reading line | 
| 06/15/1992 | WO1992010827A1 Manual braille writer | 
| 06/15/1992 | CA2075944A1 Manual braille writer | 
| 06/14/1992 | WO1992010900A1 Interactive telephone communication system for hearing-impaired person | 
| 06/14/1992 | CA2096968A1 Interactive telephone communication system for hearing-impaired person | 
| 06/11/1992 | WO1992009984A1 Low cost virtual reality system | 
| 06/11/1992 | DE4039562A1 User facility for use by blind - allows setting of equipment to pass through delay with audio confirmation | 
| 06/11/1992 | DE4038724A1 Text enlargement appts. for visually handicapped reader - has video camera on carriage and motor driven text holder and displays enlarged text on monitor | 
| 06/10/1992 | EP0489023A1 Intra-aural hearing aid with sound balancing channel. | 
| 06/09/1992 | US5121421 Interactive telephone communication system for hearing-impaired person | 
| 06/02/1992 | US5118390 Without wet pressing; dry calendering | 
| 05/29/1992 | WO1992009251A1 Communication device for transmitting audio information to a user | 
| 05/29/1992 | CA2096974A1 Communication device for transmitting audio information to a user | 
| 05/27/1992 | EP0486647A1 Predictive scanning input system for rapid selection of visual indicators | 
| 05/19/1992 | CA1300875C Process and apparatus for conveying information through motion sequences | 
| 05/12/1992 | US5113481 Augmentive communications system and method | 
| 05/06/1992 | CN1060940A Eye directed controller | 
| 05/05/1992 | US5111409 Authoring and use systems for sound synchronized animation | 
| 04/30/1992 | DE4033673A1 Wireless alarm and communication system for hard of hearing - provides inductive transmission to receiver worn by user e.g. in shirt or jacket pocket | 
| 04/30/1992 | DE4033591A1 Braille pattern generator using serially polarised bimorph strips - produces standard eight=dot character by deflection of bimorph(s) contacted by upper and lower spring elements | 
| 04/28/1992 | US5108290 Apparatus for displaying letters or pictures | 
| 04/10/1992 | CA2037599A1 Color-coded training method | 
| 04/07/1992 | US5103485 Pattern information reading apparatus | 
| 04/07/1992 | US5103223 Street crossing signal | 
| 03/25/1992 | EP0304419B1 Automatic orientation device for walkers and the blind | 
| 03/17/1992 | US5097425 Predictive scanning input system for rapid selection of visual indicators | 
| 03/17/1992 | US5097326 Image-audio transformation system | 
| 03/17/1992 | CA1297421C Mass production auditory canal hearing aid | 
| 02/25/1992 | US5091865 Pattern reading apparatus having variable reading period | 
| 02/20/1992 | WO1992002890A1 Communication system with text message retrieval based on concepts inputted via keyboard icons | 
| 02/19/1992 | EP0471327A1 Braille cell | 
| 02/04/1992 | US5086287 Display surface for tactile information | 
| 01/29/1992 | EP0468340A2 Eye directed controller | 
| 01/25/1992 | CA2047431A1 Eye directed controller | 
| 01/23/1992 | DE4022457A1 Communication aid for speech and movements impaired individual - uses character disc indexed via stepping motor to bring required characters into viewing position | 
| 01/09/1992 | WO1992000037A1 Testing and treatment of visual dysfunctions | 
| 01/08/1992 | EP0465058A2 Written language parser system | 
| 01/07/1992 | CA1293856C Tactile code for the visually impaired and blind | 
| 12/31/1991 | US5076260 Sensible body vibration | 
| 12/12/1991 | WO1991019964A1 Predictive scanning input system for rapid selection of visual indicators | 
| 11/19/1991 | US5067019 Programmable remapper for image processing | 
| 11/19/1991 | US5065837 Handrail for aiding visually handicapped | 
| 11/13/1991 | CN2088718U Multi-function inserting dish for blind | 
| 11/12/1991 | US5065434 Image information processing apparatus having a multi-function switch | 
| 10/24/1991 | DE4012659A1 Scannable reproduction of text data in Braille script - using Braille elements composed of piezoceramic cylinders which can be set into vertical vibrations | 
| 10/22/1991 | US5060062 Electronic vision aid device | 
| 10/16/1991 | EP0314780A4 The information station | 
| 10/09/1991 | EP0450196A1 Data processing system using gesture-based input data | 
| 10/02/1991 | DE4010156A1 Braille text reading device - with speed and direction of Braille test flowing past finger-mask recess controlled by user | 
| 09/25/1991 | EP0448187A1 Device for tactile representation of characters and graphic information for blind persons | 
| 09/24/1991 | CA1289410C Braille printing plate | 
| 09/18/1991 | EP0446856A2 Sound output electronic apparatus | 
| 09/18/1991 | CN1054560A Blind person writing unit |