2219526

Information

• Patent Grant
• 2219526

• References
• Source

• Patent Number

  2,219,526

• Date Filed

  Not available

• Date Issued

  Tuesday, October 29, 1940
  84 years ago

• CPC

  • B65D27/02 - with stiffening inserts

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes