2622333

Information

• Patent Grant
• 2622333

• References
• Source

• Patent Number

  2,622,333

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1952
  72 years ago

• CPC

  • B41M3/04 - Music

• US Classifications

  • 033 - Geometrical instruments
  • 084 - Music