3489843

Information

• Patent Grant
• 3489843

• References
• Source

• Patent Number

  3,489,843

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1970
  55 years ago

• CPC

  • G10H1/045 - by electromechanical means
  • Y10S84/01 - Plural speakers

• US Classifications

  • 084 - Music
  • 984 - Musical instruments