3521536

Information

• Patent Grant
• 3521536

• References
• Source

• Patent Number

  3,521,536

• Date Filed

  Not available

• Date Issued

  Tuesday, July 21, 1970
  54 years ago

• CPC

  • B31B1/48 - by folding or tucking-in locking flaps
  • B31B2201/2666 - involving interconnecting side walls
  • B31B2201/6091 - by folding or tucking-in locking flaps

• US Classifications

  • 493 - Manufacturing container or tube from paper
  • 072 - Metal deforming