3817445

Information

• Patent Grant
• 3817445

• References
• Source

• Patent Number

  3,817,445

• Date Filed

  Not available

• Date Issued

  Tuesday, June 18, 1974
  50 years ago

• CPC

  • B42D5/025 - Mailer assemblies
  • Y10S229/928 - Expandable envelope

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes