2180833

Information

• Patent Grant
• 2180833

• References
• Source

• Patent Number

  2,180,833

• Date Filed

  Not available

• Date Issued

  Tuesday, November 21, 1939
  85 years ago

• CPC

  • B42F13/04 - with cords, coils, or chains

• US Classifications

  • 402 - Binder device releasably engaging aperture or notch of sheet