3572575

Information

• Patent Grant
• 3572575

• References
• Source

• Patent Number

  3,572,575

• Date Filed

  Not available

• Date Issued

  Tuesday, March 30, 1971
  53 years ago

• CPC

  • B65D13/04 - of paper

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes