2220874

Information

• Patent Grant
• 2220874

• References
• Source

• Patent Number

  2,220,874

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1940
  84 years ago

• CPC

  • B31B19/90 - Attaching accessories not otherwise provided for
  • B31B23/00 - Machinery characterised by making rectangular envelopes or bags of flat form, i.e. without structural provision at the base for thickness of contents, from webs
  • B31B2219/6092 - by applying or securing strips or tape
  • B31B2219/9009 - Applying strips
  • B31B2237/10 - the bags having no structural provision at the base for thickness of content
  • B31B2237/40 - involving folding webs longitudinally
  • B31B2237/406 - the bags having their openings facing transversally to the direction of movement

• US Classifications

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