Bonnie A Greenstein, Age 679602 4Th Ave APT 5N, Brooklyn, NY 11209
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9602 4Th Ave APT 5N, Brooklyn, NY 11209 (718) 336-8625
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Us Patents
Calculator
US Patent:
6015224, Jan 18, 2000
Filed:
Mar 13, 1996
Appl. No.:
8/614665
Inventors:
Bonnie Greenstein - Brooklyn NY
International Classification:
G06F 300
US Classification:
36471008
Abstract:
A calculator, comprising a keyboard having keys, each key having tactile symbols which indicate in Braille the numeral or function that the key represents. The calculator communicates its calculated numerical results visually, audibly, and tactiley. The tactile indication provides the result by a series of counting pulses, which represent the numerals in the result, the numerals separated by numerals spaces. The speed that the result is tactiley communicated is controllable by the user.
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