2806398

Information

• Patent Grant
• 2806398

• References
• Source

• Patent Number

  2,806,398

• Date Filed

  Not available

• Date Issued

  Tuesday, September 17, 1957
  67 years ago

• CPC

  • G10C3/163 - the actions being mounted in a plane below the keyboard

• US Classifications

  • 084 - Music
  • D17 - Musical instruments