3567840

Information

• Patent Grant
• 3567840

• References
• Source

• Patent Number

  3,567,840

• Date Filed

  Not available

• Date Issued

  Tuesday, March 2, 1971
  54 years ago

• CPC

  • G10H3/09 - using tapes or wires

• US Classifications

  • 084 - Music
  • 360 - Dynamic magnetic information storage or retrieval
  • 984 - Musical instruments