2577580

Information

• Patent Grant
• 2577580

• References
• Source

• Patent Number

  2,577,580

• Date Filed

  Not available

• Date Issued

  Tuesday, December 4, 1951
  73 years ago

• CPC

  • G10B3/06 - Valves Sleeves

• US Classifications

  • 084 - Music
  • 984 - Musical instruments