1574520

Information

• Patent Grant
• 1574520

• References
• Source

• Patent Number

  1,574,520

• Date Filed

  Not available

• Date Issued

  Tuesday, February 23, 1926
  98 years ago

• CPC

  • B65D5/28 - with extensions of sides permanently secured to adjacent sides, with sides permanently secured together by adhesive strips, or with sides held in place solely by rigidity of material
  • B65D5/2057 - Inter-engaging self-locking flaps
  • B65D5/325 - whereby one blank forms three sides of the body, and the other blank forms the remaining sides, a hinged lid, and the opposite end closure

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes