3854131

Information

• Patent Grant
• 3854131

• References
• Source

• Patent Number

  3,854,131

• Date Filed

  Not available

• Date Issued

  Tuesday, December 10, 1974
  50 years ago

• CPC

  • G06F3/016 - Input arrangements with force or tactile feedback as computer generated output to the user
  • B41J7/005 - Type-selecting actions or mechanisms by unusual means
  • G06F3/033 - Pointing devices displaced or positioned by the user
  • G06F3/04842 - Selection of a displayed object
  • G09B21/00 - Teaching, or communicating with, the blind, deaf or mute
  • H03M11/00 - Coding in connection with keyboards or like devices

• US Classifications

  • 341 - Coded data generation or conversion
  • 178 - Telegraphy
  • 200 - Electricity: circuit makers and breakers
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets
  • 340 - Communications: electrical
  • 345 - Computer graphics processing and selective visual display systems
  • 400 - Typewriting machines