1977-11-16
1980-08-05
Grieb, William H.
G09B 2104
Patent
active
042154901
ABSTRACT:
A hand held and portable device used for communicating between blind-deaf persons and between blind-deaf and nonhandicapped persons who know the Braille system. The transmitter person presses one or a number of the six keys in combinations producing raised projections representing a six unit Braille cell to be felt and read by a receiving person through tactile finger sensation.
REFERENCES:
patent: 2012924 (1935-08-01), Conklin
patent: 2892266 (1959-06-01), Tompkins
patent: 3289327 (1966-12-01), Chevillon
patent: 4079825 (1978-03-01), Fewell
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