3711852

Information

• Patent Grant
• 3711852

• References
• Source

• Patent Number

  3,711,852

• Date Filed

  Not available

• Date Issued

  Tuesday, January 16, 1973
  51 years ago

• CPC

  • G06F3/0219 - Special purpose keyboards
  • G06C7/02 - Keyboards
  • H01G7/02 - Electrets
  • H01H13/84 - characterised by ergonomic functions
  • H03K17/972 - having a plurality of control members
  • H03K17/98 - having a plurality of control members
  • H01H2239/006 - Containing a capacitive switch or usable as such

• US Classifications

  • 341 - Coded data generation or conversion
  • 178 - Telegraphy
  • 307 - Electrical transmission or interconnection systems