1933121

Information

• Patent Grant
• 1933121

• References
• Source

• Patent Number

  1,933,121

• Date Filed

  Not available

• Date Issued

  Tuesday, October 31, 1933
  91 years ago

• CPC

  • B31B39/00 - Machinery characterised by making lined envelopes or bags
  • 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
  • B31B2221/102 - obtained from essentially rectangular sheets
  • B31B2237/05 - the bags having multilayered walls
  • Y10S493/922 - having liner

• US Classifications

  • 493 - Manufacturing container or tube from paper