3648923

Information

• Patent Grant
• 3648923

• References
• Source

• Patent Number

  3,648,923

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1972
  52 years ago

• CPC

  • B65D27/00 - Envelopes or like essentially-rectangular containers for postal or other purposes having no structural provision for thickness of contents
  • Y10S229/928 - Expandable envelope

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes