3305957

Information

• Patent Grant
• 3305957

• References
• Source

• Patent Number

  3,305,957

• Date Filed

  Not available

• Date Issued

  Tuesday, February 28, 1967
  58 years ago

• CPC

  • B42D3/008 - applied on the back of book covers

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 402 - Binder device releasably engaging aperture or notch of sheet
  • D19 - Office supplies