3821529

Information

• Patent Grant
• 3821529

• References
• Source

• Patent Number

  3,821,529

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • H01H3/12 - Push-buttons
  • G10H1/185 - associated with key multiplexing
  • G10H1/344 - Structural association with individual keys
  • Y10T29/49876 - by snap fit

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 029 - Metal working
  • 400 - Typewriting machines
  • 984 - Musical instruments