3724317

Information

• Patent Grant
• 3724317

• References
• Source

• Patent Number

  3,724,317

• Date Filed

  Not available

• Date Issued

  Tuesday, April 3, 1973
  51 years ago

• CPC

  • G10C3/28 - Transposing devices
  • B62B2202/34 - Music instruments

• US Classifications

  • 084 - Music