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  • * '''Melvang''' - Complete IBM Model F Restoration Services.
    2 KB (335 words) - 18:39, 5 January 2019
  • ...herry, IBM, Topre, and ALPS. Sometimes, people don't include Topre or some IBM models as "mechanical". ...ling spring over membrane (Model M), and Buckling spring capacitive (Model F). In both designs, a round barrel only allows the key to travel up or down.
    11 KB (1,811 words) - 14:43, 22 May 2016
  • ...used in preceding keyboards. It was invented by Richard Hunter Harris and IBM was granted [http://www.google.com/patents?vid=4118611 U.S. Patent 4,118,61 * IBM (IBM, Lexmark, MaxiSwitch)
    2 KB (323 words) - 22:15, 5 April 2013
  • ! align="left"|Model | MaxiSwitch, Unicomp (for IBM)
    6 KB (996 words) - 02:21, 5 April 2013