1900840

Information

• Patent Grant
• 1900840

• References
• Source

• Patent Number

  1,900,840

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1933
  91 years ago

• CPC

  • B42F13/16 - with claws or rings
  • B42F17/02 - in which the cards are stored substantially at right angles to the bottom of their containers
  • Y10T29/53674 - Loose-leaf sheet binder

• US Classifications

  • 029 - Metal working
  • 211 - Supports: racks
  • 248 - Supports
  • 402 - Binder device releasably engaging aperture or notch of sheet