3438298

Information

• Patent Grant
• 3438298

• References
• Source

• Patent Number

  3,438,298

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1969
  55 years ago

• CPC

  • G10D7/023 - Recorders

• US Classifications

  • 084 - Music
  • D17 - Musical instruments