2873638

Information

• Patent Grant
• 2873638

• References
• Source

• Patent Number

  2,873,638

• Date Filed

  Not available

• Date Issued

  Tuesday, February 17, 1959
  65 years ago

• CPC

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

• US Classifications

  • 084 - Music