3781452

Information

• Patent Grant
• 3781452

• References
• Source

• Patent Number

  3,781,452

• Date Filed

  Not available

• Date Issued

  Tuesday, December 25, 1973
  52 years ago

• CPC

  • G10H3/09 - using tapes or wires
  • Y10S84/29 - Tape

• US Classifications

  • 084 - Music
  • 984 - Musical instruments