3843851

Information

• Patent Grant
• 3843851

• References
• Source

• Patent Number

  3,843,851

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1974
  50 years ago

• CPC

  • H01H13/84 - characterised by ergonomic functions
  • G06F15/02 - manually operated with input through keyboard and computation using a built-in programme
  • H01H13/702 - with contacts carried by or formed from layers in a multilayer structure
  • H01H2207/02 - Solder
  • H01H2207/024 - in top layer
  • H01H2209/01 - Increasing rigidity Anti-creep
  • H01H2221/024 - Transmission element
  • H01H2223/002 - sealed
  • H01H2223/034 - Bezel
  • H01H2231/002 - Calculator, computer
  • H01H2239/004 - High frequency adaptation or shielding
  • H01H2239/016 - combined with start switch, discrete keyboard

• US Classifications

  • 200 - Electricity: circuit makers and breakers