3861583

Information

• Patent Grant
• 3861583

• References
• Source

• Patent Number

  3,861,583

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1975
  50 years ago

• CPC

  • B65D5/541 - the lines of weakness being provided in one or more closure flaps
  • B65D5/5405 - for opening containers formed by erecting a blank in tubular form
  • B65D2301/10 - Blanks mutually positioned to minimise waste material upon cutting out the individual blank from a continuous or large sheet
  • Y10S229/924 - Means to facilitate gripping a tear strip
  • Y10S229/936 - Three or more blanks with alternating orientations

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes