2422940

Information

• Patent Grant
• 2422940

• References
• Source

• Patent Number

  2,422,940

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1947
  77 years ago

• CPC

  • G10H1/18 - Selecting circuits
  • G10H2210/586 - Natural chords

• US Classifications

  • 084 - Music
  • 984 - Musical instruments