2569525

Information

• Patent Grant
• 2569525

• References
• Source

• Patent Number

  2,569,525

• Date Filed

  Not available

• Date Issued

  Tuesday, October 2, 1951
  73 years ago

• CPC

  • G10C3/12 - Keyboards Keys
  • G10C3/28 - Transposing devices

• US Classifications

  • 084 - Music