3906844

Information

• Patent Grant
• 3906844

• References
• Source

• Patent Number

  3,906,844

• Date Filed

  Not available

• Date Issued

  Tuesday, September 23, 1975
  49 years ago

• CPC

  • B31B21/00 - Machinery characterised by making rectangular envelopes or bags of flat form, i.e. without structural provision at the base for thickness of contents, from sheets or blanks
  • B31B1/76 - Opening or distending flattened articles
  • B31B1/90 - Attaching accessories not otherwise provided for
  • B31B19/62 - by adhesives
  • B31B2201/28 - Opening or distending flattened boxes
  • B31B2201/9071 - Applying other closure elements
  • B31B2219/6007 - by adhesives
  • B31B2221/10 - the bags having no structural provision at the base for thickness of content

• US Classifications

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