3578791

Information

• Patent Grant
• 3578791

• References
• Source

• Patent Number

  3,578,791

• Date Filed

  Not available

• Date Issued

  Tuesday, May 18, 1971
  54 years ago

• CPC

  • B65D27/32 - Opening devices incorporated during envelope manufacture

• US Classifications

  • 206 - Special receptacle or package
  • 229 - Envelopes, wrappers, and paperboard boxes
  • 383 - Flexible bags