The Kovako braille typewriter was invented by Lieutenant Colonel Alexander M. Kovako of St. Petersburg, Russia. This was the second of two writing machines invented by him. The first was the Tiphlotype, which he exhibited in 1885 at the Amsterdam Exhibition for the Blind, but it did not function well. He then introduced the example on this page which he named the Stigmatype (sometimes referred to as the Stigmatique). It sold for 80 Francs.
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