3480744

Information

• Patent Grant
• 3480744

• References
• Source

• Patent Number

  3,480,744

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1969
  55 years ago

• CPC

  • G10H1/344 - Structural association with individual keys
  • G10H2220/291 - with four or more contacts, switches or sensor triggering levels along the key kinematic path

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 084 - Music
  • 984 - Musical instruments