3400878

Information

• Patent Grant
• 3400878

• References
• Source

• Patent Number

  3,400,878

• Date Filed

  Not available

• Date Issued

  Tuesday, September 10, 1968
  56 years ago

• CPC

  • B65D5/4204 - Inspection openings or windows
  • B31B1/82 - Attaching windows
  • B31B2201/9076 - Forming or attaching windows
  • Y10S493/905 - having window
  • Y10S493/944 - Aperture card or display device with window

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes
  • 493 - Manufacturing container or tube from paper