Title:
COMMUNICATION SYSTEM FOR THE HANDICAPPED
Document Type and Number:
United States Patent 3507376
Inventors:
Kafafian, Haig
Publication Date:
04/21/1970
Other Classes:
400/477, 400/474, 178/101, 341/21, 340/825.190
International Classes:
A61F4/00; B41J7/00; G06F3/09; B41J5/10
US Patent References:
| 2031017 | Keyboard | | | |
| 2912090 | Remote control system for stenographic machines | | | |
| 1904784 | | | | |
| 2566971 | Remote control apparatus for typewriting machines | | | |
| 2613797 | Typewriter operating apparatus | | | |
| 2981395 | Operator mechanism for the control of the automatic operation of a series of successive individually selected operational steps in business, calculating and similar machines | | | |
| 3022878 | Communication device | | | |
| 3158318 | | | | |
| 3166856 | Educational device | | | |
| 3234664 | Training apparatus | | | |
| 3241115 | Control systems for use by partially or totally paralyzed persons | | | |
| 3280267 | Cross-wire control circuit arrangement for communication systems | | | |
| 3308439 | On-line system | | | |
| 3375497 | Matrix control circuitry using gate controlled unidirectional signalling devices | | | |