2272920

Information

• Patent Grant
• 2272920

• References
• Source

• Patent Number

  2,272,920

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1942
  83 years ago

• CPC

  • B31F1/0087 - Rim-rolling
  • B29C51/26 - Component parts, details or accessories Auxiliary operations
  • B31B1/00 - Box, carton, envelope or bag making machinery characterised by performing specific operations
  • B29C51/306 - with means for forming a rim
  • B29K2711/12 - Paper
  • B31B2201/226 - Modifying the shape of tubular boxes, of paper bottle necks

• US Classifications

  • 493 - Manufacturing container or tube from paper
  • 229 - Envelopes, wrappers, and paperboard boxes