3313878

Information

• Patent Grant
• 3313878

• References
• Source

• Patent Number

  3,313,878

• Date Filed

  Not available

• Date Issued

  Tuesday, April 11, 1967
  58 years ago

• CPC

  • G10H1/344 - Structural association with individual keys
  • G10H2220/281 - with two contacts, switches or sensor triggering levels along the key kinematic path

• US Classifications

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