2508423

Information

• Patent Grant
• 2508423

• References
• Source

• Patent Number

  2,508,423

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1950
  75 years ago

• CPC

  • G10D9/046 - with continuous change of tonal pitch

• US Classifications

  • 446 - Amusement devices: toys
  • 084 - Music
  • 984 - Musical instruments