3333523

Information

• Patent Grant
• 3333523

• References
• Source

• Patent Number

  3,333,523

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1967
  57 years ago

• CPC

  • B31B41/00 - Machinery characterised by making envelopes or bags of other specific form or construction
  • B31B19/36 - by continuously feeding same to stationary members
  • 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
  • B31B2219/2627 - by continuously feeding same to stationary members
  • B31B2219/269 - involving gusset-forming
  • B31B2237/10 - the bags having no structural provision at the base for thickness of content
  • B31B2237/403 - the bags having their openings facing in the direction of movement
  • B31B2241/008 - Making suction cleaner bags
  • Y10S55/02 - Vacuum cleaner bags
  • Y10S55/05 - Methods of making filter

• US Classifications

  • 493 - Manufacturing container or tube from paper
  • 055 - Gas separation
  • 383 - Flexible bags