3549777

Information

• Patent Grant
• 3549777

• References
• Source

• Patent Number

  3,549,777

• Date Filed

  Not available

• Date Issued

  Tuesday, December 22, 1970
  54 years ago

• CPC

  • G10H1/30 - to reiteratively sound two tones

• US Classifications

  • 084 - Music
  • 984 - Musical instruments