2819657

Information

• Patent Grant
• 2819657

• References
• Source

• Patent Number

  2,819,657

• Date Filed

  Not available

• Date Issued

  Tuesday, January 14, 1958
  67 years ago

• CPC

  • B31F1/0064 - using internal forming surfaces, on
  • B29C53/50 - using internal forming surfaces
  • B29C2793/009 - after shaping
  • B29L2031/709 - Articles shaped in a closed loop

• US Classifications

  • 493 - Manufacturing container or tube from paper