2797042

Information

• Patent Grant
• 2797042

• References
• Source

• Patent Number

  2,797,042

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1957
  66 years ago

• CPC

  • B65D27/30 - with special means for indicating unauthorised opening
  • B65D27/005 - Linings
  • F16N29/04 - enabling a warning to be given enabling moving parts to be stopped

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes