3569629

Information

• Patent Grant
• 3569629

• References
• Source

• Patent Number

  3,569,629

• Date Filed

  Not available

• Date Issued

  Tuesday, March 9, 1971
  53 years ago

• CPC

  • G10H1/045 - by electromechanical means

• US Classifications

  • 381 - Electrical audio signal processing systems and devices
  • 984 - Musical instruments