1991347

Information

• Patent Grant
• 1991347

• References
• Source

• Patent Number

  1,991,347

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1935
  89 years ago

• CPC

  • B65D5/3642 - the secured corners presenting diagonal, bissecting or similar folding lines, the central panel presenting no folding line
  • B65D5/0075 - Paper elements affixed to the container blank before or during erection
  • B65D5/4283 - Connections formed by separate elements

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes