(under subclass 109) Subject matter wherein the character* symbols are embossed in the record-medium* so as to be discerned by tactile sensation.
(1) Note. The typewriter of this subclass usually forms a character* in the form of a pattern of embossments, each different pattern representing a different letter or number or other symbol. A trained blind person feels the different patterns with his/her fingers and so "reads" the character*s that form the text.
SEE OR SEARCH THIS CLASS, SUBCLASS:
483, for a key-board* intended for use in a "Braille" typewriter.
