1491820

Information

• Patent Grant
• 1491820

• References
• Source

• Patent Number

  1,491,820

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1924
  100 years ago

• CPC

  • B42F13/32 - the nesting portions of the rods and tubes being straight

• US Classifications

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