3664225

Information

• Patent Grant
• 3664225

• References
• Source

• Patent Number

  3,664,225

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1972
  52 years ago

• CPC

  • G04F5/027 - using electro-mechanical driving
  • G04F5/02 - Metronomes

• US Classifications

  • 084 - Music
  • 968 - Horology