Ergonomic Keyboard History

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  Rheinmetall Portable Ergonomic Typewriter, ~1935
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  Luigi Colani Office Chair 1970
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  Thumb-Shift, 1980
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  Maltron, 1977
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  NEC PC-8801-KI, 1983
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  TRON TK1, 1991
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  NEC PC-9801 Keyboard, 1992
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  Kinesis, 1991
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  Apple Adjustable, 1993
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  Marquardt Mini-Ergo. 1993
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  Microsoft Natural, 1994
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  IBM Model 15, 1994
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  MyKey, 1994
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  Cherry Ergoplus, 1994
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  PC Reveal. ~1995
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  NEC Ergofit, 1998
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  Northgate Omnikey Evolution Ergonomic
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  Comfort Curve 2000, 2003
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  Scythe Ergo Diver, ~2003
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  Plum, 2005
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  Datadesk Smartboard ~2006
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  μTRON, 2007
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  Truly Ergonomic Keyboard
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  Ergodox, 2013