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US6128671A
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Tactile feel device having a plurality of pins that allow a user to read information from the pins and make selection by depressing the pins
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NL9500589A
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Braille cell with an actuator containing a mechanically active, intrinsically conductive polymer.
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NL9301523A
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Method for tuning a braille cell, and cell tuned according to the method
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NL9201338A
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Method for adjusting a piezoelectric bending element, device manufactured using the method and tools for applying the method.
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EP0237090A1
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Tactile relief display device and method for manufacturing it
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